6533b852fe1ef96bd12ab901
RESEARCH PRODUCT
Elektrónová a pásová štruktúra CuMnAs študovaná optickou a fotoemissinou spektroskopiou
Vít NovákLibor ŠMejkalLibor ŠMejkalCarlos FronteraLukáš PalatinusMartin ZahradnikTomáš DuchoňGwladys SteciukR. P. CampionJ. ŽEleznýKristupas Kazimieras TikuišisJan MinárRoman AntosMatteo CantoniJaroslav HamrleDominik KriegnerDominik KriegnerChristian RinaldiMartin VeisKarel VýbornýPetr KuželTomas JungwirthTomas JungwirthPeter WadleyKlára UhlířováX. Martisubject
DiffractionCondensed Matter - Materials ScienceMaterials scienceSpintronicsCondensed matter physicsPhotoemission spectroscopyMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesspintronics DFT photoemission optical properties CuMnAs02 engineering and technologyCrystal structureElectronic structure021001 nanoscience & nanotechnology01 natural sciences3. Good healthTetragonal crystal systemCondensed Matter::Materials ScienceSpintronika DFT fotoemissia optické vlastnosti CuMnAs0103 physical sciencesPrecession electron diffraction010306 general physics0210 nano-technologyElectronic band structuredescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-12-04 |