Elektrónová a pásová štruktúra CuMnAs študovaná optickou a fotoemissinou spektroskopiou
| Autor: | Vít Novák, Libor Šmejkal, Carlos Frontera, Lukáš Palatinus, Martin Zahradnik, Tomáš Duchoň, Gwladys Steciuk, R. P. Campion, J. Železný, Kristupas Kazimieras Tikuišis, Jan Minár, Roman Antos, Matteo Cantoni, Jaroslav Hamrle, Dominik Kriegner, Christian Rinaldi, Martin Veis, Karel Výborný, Petr Kužel, Tomas Jungwirth, Peter Wadley, Klára Uhlířová, X. Marti |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Condensed Matter - Materials Science Materials science Spintronics Condensed matter physics Photoemission spectroscopy Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences spintronics DFT photoemission optical properties CuMnAs 02 engineering and technology Crystal structure Electronic structure 021001 nanoscience & nanotechnology 01 natural sciences 3. Good health Tetragonal crystal system Condensed Matter::Materials Science Spintronika DFT fotoemissia optické vlastnosti CuMnAs 0103 physical sciences Precession electron diffraction 010306 general physics 0210 nano-technology Electronic band structure |
| Zdroj: | Physical Review B Archivio istituzionale della ricerca-Politecnico di Milano arXiv.org e-Print Archive |
| Popis: | Tetragonal phase of CuMnAs progressively appears as one of the key materials for antiferromagnetic spintronics due to efficient current-induced spin-orbit torques whose existence can be directly inferred from crystal symmetry. Theoretical understanding of spintronic phenomena in this material, however, relies on the detailed knowledge of electronic structure (band structure and corresponding wave functions) which has so far been tested only to a limited extent. We show that AC permittivity (obtained from ellipsometry) and UV photoelectron spectra agree with density functional calculations. Together with the x-ray diffraction and precession electron diffraction tomography, our analysis confirms recent theoretical claim [Phys.Rev.B 96, 094406 (2017)] that copper atoms occupy lattice positions in the basal plane of the tetragonal unit cell. 5 pages, 5 figures + Supplementary Information |
| Databáze: | OpenAIRE |
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