Enhanced permeability dielectric FeCo/Al2O3 multilayer thin films with tailored properties deposited by magnetron sputtering on silicon

Autor: Claudiu V. Falub, Srinivas V. Pietambaram, Oguz Yildirim, Mojmír Meduňa, Ondrej Caha, Rachid Hida, Xue Zhao, Jan Ambrosini, Hartmut Rohrmann, Hans J. Hug

Publikováno v: AIP Advances, Vol 9, Iss 3, Pp 035243-035243-6 (2019)

We have studied the structural and magnetic properties of enhanced-permeability-dielectric FeCo/Al2O3-multilayer thin films deposited on 8"-Si wafers in an industrial magnetron sputtering system. The EPD-multilayers consist of 25 periods of alternati

Externí odkaz: https://doaj.org/article/d0b957c74a034aabaed4d98dbc792536

Mn-rich MnSb2Te4: A topological insulator with magnetic gap closing at high Curie temperatures of 45-50 K

Autor: Daniel Primetzhofer, Mikhail M. Otrokov, Eugen Weschke, F. Freyse, Andreas Ney, S. Wimmer, Gustav Bihlmayer, Gerrit E. W. Bauer, Oliver Rader, B. Lake, Philipp Küppers, Marcus Liebmann, Markus Morgenstern, Martin Hoffman, Jaime Sánchez-Barriga, Gunther Springholz, Arthur Ernst, Ondrej Caha, Enrico Schierle, Jan Michalička, Evgueni V. Chulkov

Publikováno v: Advanced materials. 2021. Vol. 33, № 42. P. 2102935 (1-11)
Advanced Materials
Advanced materials 10, 2102935 (2021). doi:10.1002/adma.202102935
Advanced materials 33(42), 2102935 (2021). doi:10.1002/adma.202102935
Digital.CSIC. Repositorio Institucional del CSIC
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Ferromagnetic topological insulators exhibit the quantum anomalous Hall effect, which is potentially useful for high-precision metrology, edge channel spintronics, and topological qubits. The stable 2+ state of Mn enables intrinsic magnetic topologic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14eb74075d79c522966bda0cd2e6b2fd
https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000892893

Topological quantum phase transition from mirror to time reversal symmetry protected topological insulator

Autor: Andrei Varykhalov, E. Golias, Gunther Springholz, Ondrej Caha, P. S. Mandal, Oliver Rader, Gerrit E. W. Bauer, Valentine V. Volobuev, Jaime Sánchez-Barriga

Publikováno v: Nature Communications, Vol 8, Iss 1, Pp 1-7 (2017)
Nature Communications

Topological insulators constitute a new phase of matter protected by symmetries. Time-reversal symmetry protects strong topological insulators of the Z2 class, which possess an odd number of metallic surface states with dispersion of a Dirac cone. To

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcaae41bc4b5a24450eb61c8943b0863
https://doaj.org/article/a699d5d3688a40f9aae27dc5532046b7

Nonmagnetic band gap at the Dirac point of the magnetic topological insulator (Bi1−xMnx)2Se3

Autor: H. Steiner, M. Dunst, Sergio Valencia, Jürgen Braun, Hubert Ebert, R. Kirchschlager, G. Springholz, Oliver Rader, E. Golias, Enrico Schierle, Jan Minár, Václav Holý, G. Bauer, Lada V. Yashina, Andreas Ney, Ondrej Caha, Eugen Weschke, Jaime Sánchez-Barriga, Andrei Varykhalov, Ahmet Unal

Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-10 (2016)
Nature Communications

Magnetic doping is expected to open a band gap at the Dirac point of topological insulators by breaking time-reversal symmetry and to enable novel topological phases. Epitaxial (Bi$_{1-x}$Mn$_{x}$)$_{2}$Se$_{3}$ is a prototypical magnetic topological

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e27ee0d4045940a1f36367fa268cc632
https://doaj.org/article/bab09ea8531545da888263a8c825ac3d