Chiral phonons and phononic birefringence in ferromagnetic metal–bulk acoustic resonator hybrids
Manuel Müller, Johannes Weber, Fabian Engelhardt, Victor A.S.V. Bittencourt, Thomas Luschmann, Mikhail Cherkasskii, Matthias Opel, Sebastian T.B. Goennenwein, Silvia Viola Kusminskiy, Stephan Geprägs, Rudolf Gross, Matthias Althammer, Hans Huebl
Physical Review B 109, 024430 (2024) |
Structural, electrical and magnetic properties of reactively DC sputtered Cu and Ti thin films. Application to Cu/Ti neutron supermirrors for low spin-flip applications
Jose Manuel Gómez-Guzmán, Matthias Opel, Tamás Veres, Peter Link, László Bottyán
Nuclear Instruments and Methods in Physics Research Section A 1059, 169005 (2024) |
Impact of growth conditions on magnetic anisotropy and magnon Hanle effect in α-Fe2O3
M. Scheufele, J. Gückelhorn, M. Opel, A. Kamra, H. Huebl, R. Gross, S. Geprägs, M. Althammer
APL Materials 11, 091115 (2023) |
Nonreciprocal Magnon Hanle Effect in Antiferromagnetic α-Fe2O3
Janine Gückelhorn, Sebastián de-la-Peña, Monika Scheufele, Matthias Grammer, Matthias Opel, Stephan Geprägs, Juan Carlos Cuevas, Rudolf Gross, Hans Huebl, Akashdeep Kamra, Matthias Althammer
2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), Sendai, Japan (2023) |
Spin Hall Magnetoresistance in Antiferromagnetic Insulators
Stephan Geprägs, Matthias Opel, Johanna Fischer, Philipp Schwenke, Matthias Althammer, Hans Huebl, Rudolf Gross
2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), Sendai, Japan (2023) |
Observation of the Nonreciprocal Magnon Hanle Effect
Janine Gückelhorn, Sebastián de-la-Peña, Monika Scheufele, Matthias Grammer, Matthias Opel, Stephan Geprägs, Juan Carlos Cuevas, Rudolf Gross, Hans Huebl, Akashdeep Kamra, Matthias Althammer
Physical Review Letters 130, 216703 (2023) |
Superspin ensembles of oxidized-CoxFe1−xS2 with embedded magnetic nanoparticles
Henrik Gabold, Chinawat Ekwongsa, Pinit Kidkhunthod, Rattikorn Yimnirun, Matthias Opel, Amitesh Paul
Journal of Materials Research 38, 867 (2023) |
OPEN ACCESS
Carboxymethyl-Dextran-Coated Superparamagnetic Iron Oxide Nanoparticles for Drug Delivery: Influence of the Coating Thickness on the Particle Properties
Chiara Turrina, Davide Milani, Anna Klassen, Diana M. Rojas-González, Jennifer Cookman, Matthias Opel, Barbara Sartori, Petra Mela, Sonja Berensmeier, Sebastian P. Schwaminger
International Journal of Molecular Sciences 23, 14743 (2022) |
Revealing the effect of interstitial oxygen on the low-energy crystal electric field excitations of Pr3+ in 214-nickelates
Rajesh Dutta, Avishek Maity, Anna Marsicano, J. Ross Stewart, Matthias Opel, Werner Paulus
Physical Review B 105, 195147 (2022) |
Influence of low-energy magnons on magnon Hanle experiments in easy-plane antiferromagnets
Janine Gückelhorn, Akashdeep Kamra, Tobias Wimmer, Matthias Opel, Stephan Geprägs, Rudolf Gross, Hans Huebl, Matthias Althammer
Physical Review B 105, 094440 (2022) |
In Situ Study of FePt Nanoparticles-Induced Morphology Development during Printing of Magnetic Hybrid Diblock Copolymer Films
Wei Cao, Shanshan Yin, Martin Bitsch, Suzhe Liang, Martina Plank, Matthias Opel, Manuel A. Scheel, Markus Gallei, Oliver Janka, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum
Advanced Functional Materials 32, 2107667 (2022) |
Low-temperature suppression of the spin Nernst angle in Pt
T. Wimmer, J. Gückelhorn, S. Wimmer, S. Mankovsky, H. Ebert, M. Opel, S. Geprägs, R. Gross, H. Huebl, and M. Althammer
Physical Review B 104, L140404 (2021) |
Controlling Domain-Wall Nucleation in Ta/Co-Fe-B/MgO Nanomagnets via Local Ga+ Ion Irradiation
Simon Mendisch, Fabrizio Riente, Valentin Ahrens, Luca Gnoli, Michael Haider, Matthias Opel, Martina Kiechle, Massimo Ruo Roch, Markus Becherer
Physical Review Applied 16, 014039 (2021) |
Quantifying the spin mixing conductance of EuO/W heterostructures by spin Hall magnetoresistance experiments
Paul Rosenberger, Matthias Opel, Stephan Geprägs, Hans Huebl, Rudolf Gross, Martina Müller, Matthias Althammer
Applied Physics Letters 118, 192401 (2021) |
Spray-Deposited Anisotropic Ferromagnetic Hybrid Polymer Films of PS-b-PMMA and Strontium Hexaferrite Magnetic Nanoplatelets
Wei Cao, Shanshan Yin, Martina Plank, Andrei Chumakov, Matthias Opel, Wei Chen, Lucas P. Kreuzer, Julian E. Heger, Markus Gallei, Calvin J. Brett, Matthias Schwartzkopf, Artem A. Eliseev, Evgeny O. Anokhin, Lev A. Trusov, Stephan V. Roth, Peter Müller-Buschbaum
ACS Appl. Mater. Interfaces 13, 1592 (2021) |
Static magnetic proximity effects and spin Hall magnetoresistance in Pt/Y3Fe5O12 and inverted Y3Fe5O12/Pt bilayers
Stephan Geprägs, Christoph Klewe, Sibylle Meyer, Dominik Graulich, Felix Schade, Marc Schneider, Sonia Francoual, Stephen P. Collins, Katharina Ollefs, Fabrice Wilhelm, Andrei Rogalev, Yves Joly, Sebastian T. B. Goennenwein, Matthias Opel, Timo Kuschel, Rudolf Gross
Physical Review B 102, 214438 (2020) |
Observation of Antiferromagnetic Magnon Pseudospin Dynamics and the Hanle Effect
T. Wimmer, A. Kamra, J. Gückelhorn, M. Opel, S. Geprägs, R. Gross, H. Huebl, M. Althammer
Physical Review Letters 125, 247204 (2020) |
Precise control of Jeff=1/2 magnetic properties in Sr2IrO4 epitaxial thin films by variation of strain and thin film thickness
Stephan Geprägs, Björn Erik Skovdal, Monika Scheufele, Matthias Opel, Didier Wermeille, Paul Thompson, Alessandro Bombardi, Virginie Simonet, Stéphane Grenier, Pascal Lejay, Gilbert Andre Chahine, Diana Lucia Quintero-Castro, Rudolf Gross, Danny Mannix
Physical Review B 102, 214402 (2020) |
Direct evidence for anisotropic three-dimensional magnetic excitations in a hole-doped antiferromagnet
Rajesh Dutta, Avishek Maity, Anna Marsicano, J. Ross Stewart, Matthias Opel, Werner Paulus
Physical Review B 102, 165130 (2020) |
Effect of interfacial oxidation layer in spin pumping experiments on Ni80Fe20/SrIrO3 heterostructures
T. S. Suraj, Manuel Müller, Sarah Gelder, Stephan Geprägs, Matthias Opel, Mathias Weiler, K. Sethupathi, Hans Huebl, Rudolf Gross, M. S. Ramachandra Rao, Matthias Althammer
Journal of Applied Physics 128, 083903 (2020) |
Spin Hall magnetoresistance in antiferromagnetic insulators
Stephan Geprägs, Matthias Opel, Johanna Fischer, Olena Gomonay, Philipp Schwenke, Matthias Althammer, Hans Huebl, Rudolf Gross
Journal of Applied Physics 127, 243902 (2020) |
OPEN ACCESS
Surface distortion of Fe dot-decorated TiO2 nanotubular templates using time-of-flight grazing incidence small angle scattering
Neelima Paul, Jean-Francóis Moulin, Gaetano Mangiapia, Armin Kriele, Peter Müller-Buschbaum, Matthias Opel, Amitesh Paul
Scientific Reports 10, 4038 (2020) |
Self-Assembly of Large Magnetic Nanoparticles in Ultrahigh Molecular Weight Linear Diblock Copolymer Films
Wei Cao, Senlin Xia, Xinyu Jiang, Michael Appold, Matthias Opel, Martina Plank, Roy Schaffrinna, Lucas P. Kreuzer, Shanshan Yin, Markus Gallei, Matthias Schwartzkopf, Stephan V. Roth, Peter Müller-Buschbaum
ACS Appl. Mater. Interfaces 12, 7557 (2020) |
Large spin Hall magnetoresistance in antiferromagnetic α-Fe2O3/Pt heterostructures
Johanna Fischer, Matthias Althammer, Nynke Vlietstra, Hans Huebl, Sebastian T. B. Goennenwein, Rudolf Gross, Stephan Geprägs, Matthias Opel
Phys. Rev. Applied 13, 014019 (2020) |
Improving the modelling of susceptibility-induced spatial distortions in MRI-guided extra-cranial radiotherapy
C. Kroll, O. Dietrich, J. Bortfeldt, C. Paganelli, G. Baroni, F. Kamp, S. Neppl, C. Belka, K. Parodi, M. Opel, M. Riboldi
Physics in Medicine & Biology 64, 205006 (2019) |
Role of interface quality for the spin Hall magnetoresistance in nickel ferrite thin films with bulk-like magnetic properties
M. Althammer, A. V. Singh, T. Wimmer, Z. Galazka, H. Huebl, M. Opel, R. Gross, A. Gupta
Appl. Phys. Lett. 115, 092403 (2019) |
OPEN ACCESS
Printed Thin Diblock Copolymer Films with Dense Magnetic Nanostructure
S. Xia, L. Song, W. Chen, V. Körstgens, M. Opel, M. Schwartzkopf, S. V. Roth, P. Müller-Buschbaum
ACS Appl. Mater. Interfaces 11, 21935 (2019) |
Spray-Coating Magnetic Thin Hybrid Films of PS-b-PNIPAM and Magnetite Nanoparticles
S. Xia, L. Song, N. Hohn, K. Wang, S. Grott, M. Opel, M. Schwartzkopf, S. V. Roth, P. Müller-Buschbaum
Adv. Funct. Mater. 29, 1808427 (2019) |
Magnetic nanoparticle-containing soft-hard diblock copolymer films with high order
S. Xia, L. Song, V. Körstgens, M. Opel, M. Schwartzkopf, S. V. Roth, P. Müller-Buschbaum
Nanoscale 10, 11930 (2018) |
Structural and magnetic properties of cobalt iron disulfide (CoxFe1−xS2) nanocrystals
H. Gabold, Z. Luan, N. Paul, M. Opel, P. Müller-Buschbaum, M. Law, A. Paul
Sci. Rep. 8, 4835 (2018) |
Phonon anomalies in FeS
A. Baum, A. Milosavljević, N. Lazarević, M. M. Radonjić, B. Nikolić, M. Mitschek, Z. Inanloo Maranloo, M. Šćepanović, M. Grujić-Brojčin, N. Stojilović, M. Opel, Aifeng Wang (王爱峰), C. Petrovic, Z. V. Popović, R. Hackl
Phys. Rev. B 97, 054306 (2018) |
Printed Thin Magnetic Films Based on Diblock Copolymer and Magnetic Nanoparticles
S. Xia, E. Metwalli, M. Opel, P.A. Staniec, E.M. Herzig, P. Müller-Buschbaum
ACS Appl. Mater. Interfaces 10, 2982 (2018) |
Magnetic excitations and amplitude fluctuations in insulating cuprates
N. Chelwani, A. Baum, T. Böhm, M. Opel, F. Venturini, L. Tassini, A. Erb, H. Berger, L. Forró, R. Hackl
Phys. Rev. B 97, 024407 (2018) |
Spin Hall magnetoresistance in antiferromagnet/heavy-metal heterostructures
J. Fischer, O. Gomonay, R. Schlitz, K. Ganzhorn, N. Vlietstra, M. Althammer, H. Huebl, M. Opel, R. Gross, S.T.B. Goennenwein, S. Geprägs
Phys. Rev. B 97, 014417 (2018) |
Production and characterization of long-term stable superparamagnetic iron oxide-shell silica-core nanocomposites
A. Nistler, C. Hartmann, C. Rümenapp, M. Opel, B. Gleich, N.P. Ivleva, R. Niessner, M. Seidel
J. Magn. Magn. Mater. 442, 497 (2017) |
Pure spin current transport in gallium doped zinc oxide
M. Althammer, J. Mukherjee, S. Geprägs, S.T.B. Goennenwein, M. Opel, M.S. Ramachandra Rao, R. Gross
Appl. Phys. Lett. 110, 052403 (2017) |
Spin Hall magnetoresistance in a canted ferrimagnet
K. Ganzhorn, J. Barker, R. Schlitz, B.A. Piot, K. Ollefs, F. Giullou, F. Wilhelm, A. Rogalev, M. Opel, M. Althammer, S. Geprägs, H. Huebl, R. Gross, G.E.W. Bauer, S.T.B. Goennenwein
Phys. Rev. B 94, 094401 (2016) |
Lamellar Diblock Copolymer Films with Embedded Maghemite Nanoparticles
Y. Yao, E. Metwalli, M. Opel, M. Haese, J.-F. Moulin, K. Rodewald, B. Rieger, P. Müller-Buschbaum
Adv. Mater. Interfaces 3, 1500712 (2016)
Cover Picture - Hybrid Films: Lamellar Diblock Copolymer Films with Embedded Maghemite Nanoparticles (Adv. Mater. Interfaces 8/2016) |
Untangling the contributions of cerium and iron to the magnetism of Ce-doped yttrium iron garnet
B. Casals, M. Espínola, R. Cichelero, S. Geprägs, M. Opel, R. Gross, G. Herranz, J. Fontcuberta
Appl. Phys. Lett. 108, 102407 (2016) |
OPEN ACCESS
Arrangement of Maghemite Nanoparticles via Wet Chemical Self-Assembly in PS-b-PNIPAM Diblock Copolymer Films
Y. Yao, E. Metwalli, B. Su, V. Körstgens, D. Moseguí González, A. Miasnikova,
A. Laschewsky, M. Opel, G. Santoro, S.V. Roth, P. Müller-Buschbaum
ACS Appl. Mater. Interfaces 7, 13080 (2015) |
Anomalous Hall effect in YIG|Pt bilayers
S. Meyer, R. Schlitz, S. Geprägs, M. Opel, H. Huebl, R. Gross, S.T.B. Goennenwein
Appl. Phys. Lett. 106, 132402 (2015) |
Self-Assembly of Diblock Copolymer-Maghemite Nanoparticle Hybrid Thin Films
Y. Yao, E. Metwalli, J.-F. Moulin, B. Su, M. Opel, P. Müller-Buschbaum
ACS Appl. Mater. Interfaces 6, 18152 (2014) |
OPEN ACCESS
Zinc oxide - From dilute magnetic doping to spin transport
M. Opel, S.T.B. Goennenwein, M. Althammer, K.-W. Nielsen, E.-M. Karrer-Müller, S. Bauer, K. Senn, C. Schwark, C. Weier, G. Güntherodt, B. Beschoten, R. Gross
Phys. Status Solidi B 251, 1700 (2014)
Cover Picture: Zinc oxide - From dilute magnetic doping to spin transport (Phys. Status Solidi B 9/2014) |
OPEN ACCESS
Unambiguous determination of spin dephasing times in ZnO by time-resolved magneto-optical pump–probe experiments
S. Kuhlen, R. Ledesch, R. de Winter, M. Althammer, S.T.B. Gönnenwein, M. Opel, R. Gross, T.A. Wassner, M.S. Brandt, B. Beschoten
Phys. Status Solidi B 251, 1861 (2014) |
Temperature dependent spin transport properties of platinum inferred from spin Hall magnetoresistance measurements
S. Meyer, M. Althammer, S. Geprägs, M. Opel, R. Gross, S.T.B. Goennenwein
Appl. Phys. Lett. 104, 242411 (2014) |
Nano- and Microstructures of Magnetic Field-Guided Maghemite Nanoparticles in Diblock Copolymer Films
Y. Yao, E. Metwalli, M.A. Niedermeier, M. Opel, C. Lin, J. Ning, J. Perlich, S.V. Roth, P. Müller-Buschbaum
ACS Appl. Mater. Interfaces 6, 5244 (2014) |
OPEN ACCESS
Investigation of induced Pt magnetic polarisation in Pt/Y3Fe5O12 bilayers
S. Geprägs, S. Meyer, S. Altmannshofer, M. Opel, F. Wilhelm, A. Rogalev, R. Gross, S.T.B. Goennenwein
ESRF Highlights 2013, 88 (2014) |
Laser molecular beam epitaxy of ZnO thin films and heterostructures
M. Opel, S. Geprägs, M. Althammer, T. Brenninger, R. Gross
J. Phys. D: Appl. Phys. 47, 034002 (2014) |
Separation of semiconducting and ferromagnetic FeSi2-nanoparticles by magnetic filtering
W. Aigner, S. Niesar, E. Mehmedovic, M. Opel, F.E. Wagner, H. Wiggers, M. Stutzmann
J. Appl. Phys. 114, 134308 (2013) |
Converse magnetoelectric effects in Fe3O4/BaTiO3 multiferroic hybrids
S. Geprägs, D. Mannix, M. Opel, S.T.B. Goennenwein, R. Gross
Phys. Rev. B 88, 054412 (2013) |
Comment on "Pt magnetic polarization on Y3Fe5O12 and magnetotransport characteristics"
S. Geprägs, S.T.B. Goennenwein, M. Schneider, F. Wilhelm, K. Ollefs, A. Rogalev, M. Opel, R. Gross
arXiv:1307.4869 (2013) |
Quantitative study of the spin Hall magnetoresistance in ferromagnetic insulator/normal metal hybrids
M. Althammer, S. Meyer, H. Nakayama, M. Schreier, S. Altmannshofer, M. Weiler, H. Huebl, S. Geprägs, M. Opel, R. Gross, D. Meier, C. Klewe, T.Kuschel, J.-M. Schmalhorst, G. Reiss, L. Shen, A. Gupta, Y.-T. Chen, G.E.W. Bauer, E. Saitoh, S.T.B. Goennenwein
Phys. Rev. B 87, 224401 (2013) |
Spin Hall magnetoresistance induced by a nonequilibrium proximity effect
H. Nakayama, M. Althammer, Y.-T. Chen, K. Uchida, Y. Kajiwara, D. Kikuchi, T. Ohtani, S. Geprägs, M. Opel, S. Takahashi, R. Gross, G.E.W. Bauer, S.T.B. Goennenwein, E. Saitoh
Phys. Rev. Lett. 110, 206601 (2013)
siehe auch Physics Viewpoint: Insulating Magnets Control Neighbor's Conduction |
Investigation of induced Pt magnetic polarization in Pt/Y3Fe5O12 bilayers
S. Geprägs, S. Meyer, S. Altmannshofer, M. Opel, F. Wilhelm, A. Rogalev, R. Gross, S.T.B. Goennenwein
Appl. Phys. Lett. 101, 262407 (2012) |
Giant magnetoelastic effects in BaTiO3-based extrinsic multiferroic hybrids
S. Geprägs, M. Opel, S.T.B. Goennenwein, R. Gross
Phys. Rev. B 86, 134432 (2012) |
Spin transport and spin dephasing in zinc oxide
M. Althammer, E.-M. Karrer-Müller, S.T.B. Goennenwein, M. Opel, R. Gross
Appl. Phys. Lett. 101, 082404 (2012) |
Electrical spin injection and spin transport in zinc oxide
M. Althammer, E.-M. Karrer-Müller, S.T.B. Goennenwein, M. Opel, R. Gross
in Frontiers in Electronic Materials, edited by J. Heber, D. Schlom, Y. Tokura, R. Waser, M. Wuttig, S. 303 (Wiley-VCH, Weinheim, 2012) |
Local charge and spin currents in magnetothermal landscapes
M. Weiler, M. Althammer, F.D. Czeschka, H. Huebl, M.S. Wagner, M. Opel, I.-M. Imort, G. Reiss, A. Thomas, R. Gross, S.T.B. Goennenwein
Phys. Rev. Lett. 108, 106602 (2012)
siehe auch Physics Viewpoint: Spin-Heat Vision |
Structural, magnetic and electric behavior of the new Ba2TiMoO6 material
C.E. Alarcon-Suesca, M. Opel, D.A. TellezLandínez Téllez, J. Roa-Rojas
Physica B 407, 3074 (2012) |
Spintronic oxides grown by laser-MBE
Matthias Opel
J. Phys. D: Appl. Phys. 45, 033001 (2012) |
Novel multifunctional materials based on oxide thin films and artificial heteroepitaxial multilayers
M. Opel, S. Geprägs, E.P. Menzel, A. Nielsen, D. Reisinger, K.-W. Nielsen, A. Brandlmaier, F.D. Czeschka, M. Althammer, M. Weiler, S.T.B. Goennenwein, J. Simon, M. Svete, W. Yu, S.-M. Hühne, W. Mader, R. Gross
Phys. Status Solidi A 208, 232 (2011)
Back cover: Novel multifunctional materials based on oxide thin films and artificial heteroepitaxial multilayers (Phys. Status Solidi A 2/2011) |
Superconductivity of calcium C60 intercalation compound synthesized by shock-wave pressure
Yu. A. Ossipyan, N. S. Sidorov, A. V. Palnichenko, O. M. Vyaselev, M. V. Kartsovnik, M. Opel, V. V. Avdonin, D. V. Shakhrai, V. E. Fortov
Fullerenes, Nanotubes and Carbon Nanostructures 18, 376 (2010) |
Electric field controlled manipulation of the magnetization in Ni/BaTiO3 hybrid structures
S. Geprägs, A. Brandlmaier, M. Opel, R. Gross, S.T.B. Goennenwein
Appl. Phys. Lett. 96, 142509 (2010) |
Magnetic interference patterns in 0-π superconductor/insulator/ferromagnet/superconductor Josephson junctions: Effects of asymmetry between 0 and π regions
M. Kemmler, M. Weides, M. Weiler, M. Opel, S.T.B. Goennenwein, A.S. Vasenko, A.A. Golubov, H. Kohlstedt, D. Koelle, R. Kleiner, E. Goldobin
Phys. Rev. B 81, 054522 (2010) |
OPEN ACCESS
Advanced spectroscopic synchrotron techniques to unravel the intrinsic properties of dilute magnetic oxides: the case of Co:ZnO
A. Ney, M. Opel, T.C. Kaspar, V. Ney, S. Ye, K. Ollefs, T. Kammermeier, S. Bauer, K.-W. Nielsen, S.T.B. Goennenwein, M.H. Engelhard, S. Zhou, K. Potzger, J. Simon, W. Mader, S.M. Heald, J.C. Cezar, F. Wilhelm, A. Rogalev, R. Gross, S.A. Chambers
New J. Phys. 12, 013020 (2010) |
Giant magnetic anisotropy changes in Sr2CrReO6 thin films on BaTiO3
F.D. Czeschka, S. Geprägs, M. Opel, S.T.B. Goennenwein, R. Gross
Appl. Phys. Lett. 95, 062508 (2009) |
Epitaxial growth and magnetic properties of Sr2CrReO6 thin films
S. Geprägs, F.D. Czeschka, M. Opel, S.T.B. Goennenwein, W. Yu, W. Mader, R. Gross
J. Magn. Magn. Mater. 321, 2001 (2009) |
Epitaxial ZnxFe3−xO4 thin films: A spintronic material with tunable electrical and magnetic properties
D. Venkateshvaran, M. Althammer, A. Nielsen, S. Geprägs, M.S.R. Rao, S.T.B. Goennenwein, M. Opel, R. Gross
Phys. Rev. B 79, 134405 (2009) |
OPEN ACCESS
Voltage controlled inversion of magnetic anisotropy in a ferromagnetic thin film at room temperature
M. Weiler, A. Brandlmaier, S. Geprägs, M. Althammer, M. Opel, C. Bihler, H. Huebl, M.S. Brandt, R. Gross, S.T.B. Goennenwein
New J. Phys. 11, 013021 (2009) |
All oxide ferromagnet/semiconductor epitaxial heterostructures
A. Nielsen, A. Brandlmaier, M. Althammer, W. Kaiser, M. Opel, J. Simon, W. Mader, S.T.B. Goennenwein, R. Gross
Appl. Phys. Lett. 93, 162510 (2008) |
Anomalous Hall effect in magnetite: Universal scaling relation between Hall and longitudinal conductivity in low-conductivity ferromagnets
D. Venkateshvaran, W. Kaiser, A. Boger, M. Althammer, M.S.R. Rao, S.T.B. Goennenwein, M. Opel, R. Gross
Phys. Rev. B 78, 092405 (2008) |
Nanosized superparamagnetic precipitates in cobalt-doped ZnO
M. Opel, K.-W. Nielsen, S. Bauer, S.T.B. Goennenwein, J.C. Cezar, D. Schmeisser, J. Simon, W. Mader, R. Gross
Eur. Phys. J. B 63, 437 (2008) |
Ga1−xMnxAs/piezoelectric actuator hybrids: A model system for magnetoelastic magnetization manipulation
C. Bihler, M. Althammer, A. Brandlmaier, S. Geprägs, M. Weiler, M. Opel, W. Schoch, W. Limmer, R. Gross, M.S. Brandt, S.T.B. Goennenwein
Phys. Rev. B 78, 045203 (2008) |
Suppression of hole-mediated ferromagnetism in Ga1-xMnxP by hydrogen
C. Bihler, M. Kraus, M.S. Brandt, S.T.B. Goennenwein, M. Opel, M.A. Scarpulla, R. Farshchi, D.M. Estrada, O.D. Dubon
J. Appl. Phys. 104, 013908 (2008) |
Superconductivity of C60 fullerite intercalated with Ca by means of shock-wave pressure technique
Yu.A. Ossipyan, N.S. Sidorov, A.V. Palnichenko, O.M. Vyaselev, M.V. Kartsovnik, M. Opel, V.V. Avdonin, D.V. Shakhrai, N.V. Biktimirova, A.A. Golyshev
Chem. Phys. Lett. 457, 74 (2008) |
In situ manipulation of magnetic anisotropy in magnetite thin films
A. Brandlmaier, S. Geprägs, M. Weiler, A. Boger, M. Opel, H. Huebl, C. Bihler, M.S. Brandt, B. Botters, D. Grundler, R. Gross, S.T.B. Goennenwein
Phys. Rev. B 77, 104445 (2008) |
Piezo-voltage control of magnetization orientation in a ferromagnetic semiconductor
S.T.B. Goennenwein, M. Althammer, C. Bihler, A. Brandlmaier, S. Geprägs, M. Opel, W. Schoch, W. Limmer, R. Gross, M.S. Brandt
phys. stat. sol. (RRL) 2, 96 (2008) |
Influence of disorder on the low and high temperature magnetization and magnetoresistance in Pr0.6R0.1Sr0.3MnO3 (R = Tb, Y, Ho and Er) manganite
N. Rama, V. Sankaranarayanan, M. Opel, R. Gross, M.S. Ramachandra Rao
Journal of Alloys and Compounds 443, 7 (2007) |
Electrically detected ferromagnetic resonance
S.T.B. Goennenwein, S.W. Schink, A. Brandlmaier, A. Boger, M. Opel, R. Gross, R.S. Keizer, T.M. Klapwijk, A. Gupta, H. Huebl, C. Bihler, M.S. Brandt
Appl. Phys. Lett. 90, 162507 (2007) |
Magnetocrystalline anisotropy and magnetization reversal in Ga1−xMnxP synthesized by ion implantation and pulsed-laser melting
C. Bihler, M. Kraus, H. Huebl, M.S. Brandt, S.T.B. Goennenwein, M. Opel, M.A. Scarpulla, P.R. Stone, R. Farshchi, O.D. Dubon
Phys. Rev. B 75, 214419 (2007) |
Multiferroic materials based on artificial thin film heterostructures
S. Geprägs, M. Opel, S.T.B. Goennenwein, R. Gross
Phil. Mag. Lett. 87, 141 (2007) |
Effect of substrate on the electrical transport property of Ba2FeNbO6 double perovskite thin films
N. Rama, J.B. Philipp, M. Opel, V. Sankaranarayanan, R. Gross, M.S. Ramachandra Rao
J. Phys. D: Appl. Phys. 40, 1430 (2007) |
Magnetic and structural properties of GexMn1−x films: Precipitation of intermetallic nanomagnets
S. Ahlers, D. Bougeard, N. Sircar, G. Abstreiter, A. Trampert, M. Opel, R. Gross
Phys. Rev. B 74, 214411 (2006) |
Ferromagnetism in epitaxial Zn0.95Co0.05O films grown on ZnO and Al2O3
K. Nielsen, S. Bauer, M. Lübbe, S.T.B. Goennenwein, M. Opel, J. Simon, W. Mader, R. Gross
phys. stat. sol. (a) 203, 3581 (2006) |
Ferroelectric and magnetic properties of Ho2CuTiO6 double perovskite
S. Bhaskar Reddy, K. Mohan Kant, K. Prasad Rao, Matthias Opel, R. Gross, M.S. Ramachandra Rao
J. Magn. Magn. Mater. 303, e332 (2006) |
Spin-glass-like behavior of Ge:Mn
C. Jaeger, C. Bihler, T. Vallaitis, S.T.B. Goennenwein, M. Opel, R. Gross, M.S. Brandt
Phys. Rev. B 74, 045330 (2006) |
X-ray magnetic circular dichroism study of Re 5d magnetism in Sr2CrReO6
P. Majewski, S. Geprägs, O. Sanganas, M. Opel, R. Gross, F. Wilhelm, A. Rogalev, L. Alff
Appl. Phys. Lett. 87, 202503 (2005) |
Magnetic moments of W 5d in Ca2CrWO6 and Sr2CrWO6 double perovskites
P. Majewski, S. Geprägs, A. Boger, M. Opel, A. Erb, R. Gross, G. Vaitheeswaran, V. Kanchana, A. Delin, F. Wilhelm, A. Rogalev, L. Alff
Phys. Rev. B 72, 132402 (2005) |
Low Temperature Properties and Superconductivity of LuB12
K. Flachbart, S. Gabáni, K. Gloos, M. Meissner, M. Opel, Y. Paderno, V. Pavlík, P. Samuely, E. Schuberth, N. Shitsevalova, K. Siemensmeyer, P. Szabó
J. Low Temp. Phys. 140, 339 (2005) |
A-site dependent percolative thermopower and Griffiths phase in Pr0.7-xHoxSr0.3MnO3 (x = 0.0, 0.04, 0.08, and 0.1)
N. Rama, M. Opel, V. Sankaranarayanan, R. Gross, S.B. Ogale, T. Venkatesan, M.S. Ramachandra Rao
J. Appl. Phys. 97, 10H713 (2005) |
Ferromagnetism in Mn-doped ZnO due to impurity bands
K.-W. Nielsen, J.B. Philipp, M. Opel, A. Erb, J. Simon, L. Alff, R. Gross
Superlattices and Microstructures 37, 327 (2005) |
Epitaxial growth of electron doped double perovskites LaxA2-xCrWO6 with A = Sr and Ca
P. Majewski, S. Geprägs, A. Boger, M. Opel, L. Alff, R. Gross
J. Magn. Magn. Mater. 290-291, 1154 (2005) |
A-site-disorder-dependent percolative transport and Griffiths phase in doped manganites
N. Rama, M.S. Ramachandra Rao, V. Sankaranarayanan, P. Majewski, S. Gepraegs, M. Opel, R. Gross
Phys. Rev. B 70, 224424 (2004) |
Hall effect, magnetization, and conductivity of Fe3O4 epitaxial thin films
D. Reisinger, P. Majewski, M. Opel, L. Alff, R. Gross
Appl. Phys. Lett. 85, 4980 (2004) |
Effect of rare earth ion substitution on the magnetic and transport properties of Pr0.7RE0.04Sr0.26MnO3 (RE = Er3+, Tb3+, and Ho3+)
N. Rama, J.B. Philipp, M. Opel, A. Erb, V. Sankaranarayanan, R. Gross, M.S. Ramachandra Rao
Eur. Phys. J. B 38, 553 (2004) |
Hydrogen control of ferromagnetism in a dilute magnetic semiconductor
Sebastian T.B. Goennenwein, Thomas A. Wassner, Hans Huebl, Martin S. Brandt, Jan B. Philipp, Matthias Opel, Rudolf Gross, Achim Koeder, Wladimir Schoch, Andreas Waag
Phys. Rev. Lett. 92, 227202 (2004) |
Study of magnetic properties of A2B'NbO6 (A=Ba,Sr,BaSr; and B'=Fe and Mn) double perovskites
N. Rama, J.B. Philipp, M. Opel, K. Chandrasekaran, V. Sankaranarayanan, R. Gross, M.S. Ramachandra Rao
Journal of Applied Physics 95, 7528 (2004) |
Magnetoresistance and magnetic properties of the double perovskites
J.B. Philipp, P. Majewski, D. Reisinger, S. Geprägs, M. Opel, A. Erb, L. Alff, R. Gross
Acta Physica Polonica A 105, 7 (2004) |
Epitaxy of Fe3O4 on Si(001) by pulsed laser deposition using a TiN/MgO buffer layer
D. Reisinger, M. Schonecke, T. Brenninger, M. Opel, A. Erb, L. Alff, R. Gross
Journal of Applied Physics 94, 1857 (2003) |
Epitaxial growth and transport properties of Sr2CrWO6 thin films
J.B. Philipp, D. Reisinger, M. Schonecke, M. Opel, A. Marx, A. Erb, L. Alff, R. Gross
Journal of Applied Physics 93, 6853 (2003) |
Orbital order and anisotropic transport properties in doped manganites induced by epitaxial coherency strain
J. Klein, J.B. Philipp, D. Reisinger, M. Opel, A. Marx, A. Erb, L. Alff, R. Gross
Journal of Applied Physics 93, 7373 (2003) |
Observation of an unconventional metal-insulator transition in overdoped CuO2 compounds
F. Venturini, M. Opel, T.P. Devereaux, J.K. Freericks, I. Tüttö, B. Revaz, E. Walker, H. Berger, L. Forró, R. Hackl
Phys. Rev. Lett. 89, 107003 (2002) |
Raman Scattering in Solids (Manuskript)
M. Opel and F. Venturini
European Pharmaceutical Review 7(3), 76 (2002) |
A Light-Scattering Study of Dynamical Carrier Properties in Cuprate Systems
M. Opel, R. Nemetschek, F. Venturini, R. Hackl, I. Tüttö, H. Berger, L. Forró, A. Erb, B. Revaz, and E. Walker
Ferroelectrics 249, 155 (2001) |
Eigenschaften des Elektronensystems und seiner Wechselwirkungen in antiferromagnetischen und supraleitenden Kupraten: Eine Raman-Studie (Manuskript)
M. Opel
Dissertation TU München, Shaker-Verlag Aachen (2000), ISBN 3-8265-7514-8 |
Carrier relaxation, pseudogap, and superconducting gap in high-Tc cuprates: A Raman scattering study
M. Opel, R. Nemetschek, C. Hoffmann, R. Philipp, P.F. Müller, R. Hackl, I. Tüttö, A. Erb, B. Revaz, E. Walker, H. Berger, L. Forró
Phys. Rev. B 61, 9752 (2000) |
Superconducting Gap and Pseudogap in Bi-2212
Matthias Opel, Francesca Venturini, Rudi Hackl, Helmuth Berger, László Forró
Physica B 284-288, 669 (2000) |
Pseudogap and Superconducting Gap in YBa2Cu3O6+x: A Raman Study
Matthias Opel, Martin Götzinger, Christian Hoffmann, Ralf Nemetschek, Richard Philipp, Francesca Venturini, Rudi Hackl, Andreas Erb, Eric Walker
J. Low Temp. Phys. 117, 347 (1999) |
Raman Spectroscopy in Y-123 and Bi-2212: Pseudogap and Superconducting Gap
M. Opel, R. Nemetschek, F. Venturini, R. Hackl, A. Erb, E. Walker, H. Berger, L. Forró
physica status solidi (b) 215, 471 (1999) |
Physical Origin of the Buckling in CuO2: Electron-Phonon Coupling and Raman Spectra
M. Opel, R. Hackl, T.P. Devereaux, A. Virosztek, A. Zawadowski, A. Erb, E. Walker, H. Berger, L. Forró
Phys. Rev. B 60, 9836 (1999) |
Pseudogap and Superconducting Gap in the Electronic Raman Spectra of Underdoped Cuprates
M. Opel, R. Nemetschek, C. Hoffmann, P.F. Müller, R. Philipp, R. Hackl, H. Berger, L. Forró, A. Erb, E. Walker
J. Phys. Chem. Solids 59, 1942 (1998) |
d+s wave superconductivity: Analysis of the electronic Raman data of YBa2Cu3O7-δ and other cuprates
R. Nemetschek, R. Hackl, M. Opel, R. Philipp, M.T. Béal-Monod, J.B. Bieri, K. Maki, A. Erb, E. Walker
Eur. Phys. J. B 5, 495 (1998) |
Enhanced electron-phonon coupling and its irrelevance to high Tc superconductivity
T.P. Devereaux, A. Virosztek, A. Zawadowski, M. Opel, P.F. Müller, C. Hoffmann, R. Philipp, R. Nemetschek, R. Hackl, A. Erb, E. Walker, H. Berger, L. Forró
Solid State Commun. 108, 407 (1998) |
Pseudogap and Superconducting Gap in the Electronic Raman Spectra of Underdoped Cuprates
R. Nemetschek, M. Opel, C. Hoffmann, P.F. Müller, R. Hackl, H. Berger, L. Forró, A. Erb, E. Walker
Phys. Rev. Lett. 78, 4837 (1997) |
Electronic Raman Scattering in CuO2 Superconductors
R. Hackl, M. Opel, P.F. Müller, G. Krug, B. Stadlober, R. Nemetschek, H. Berger, L. Forró
J. Low Temp. Phys. 105, 733 (1996) |
Electronic Raman scattering in copper-oxide superconductors and related compounds
R. Hackl, G. Krug, R. Nemetschek, M. Opel, B. Stadlober
Spectroscopic Studies of Superconductors 2696, 194, eds. I. Bozovic and D. van der Marel (SPIE, Bellingham, 1996) |
A study of critical and thermal pair breaking in differently doped Cu-O superconductors by electronic Raman scattering
M. Opel, P.F. Müller, R. Nemetschek, B. Stadlober, R. Hackl, H. Berger, L. Forró
Czechoslovak Journal of Physics 46, 1107 (1996) |
Study of k-dependent electronic properties in cuprate superconductors using Raman spectroscopy
B. Stadlober, G. Krug, R. Nemetschek, M. Opel, R. Hackl, D. Einzel, C. Schuster, T.P. Devereaux, L. Forró, J.L. Cobb, J.T. Markert, J.J. Neumeier
Journal of the Physics and Chemistry of Solids 56, 1841 (1995) |
