Symmetry, distorted band structure, and spin-orbit coupling of group-III metal-monochalcogenide monolayers
| Autor: | Ian Appelbaum, Pengke Li |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Absorption spectroscopy Spin polarization Condensed matter physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology Spin–orbit interaction Electronic structure 021001 nanoscience & nanotechnology Condensed Matter Physics Population inversion 01 natural sciences Symmetry (physics) Electronic Optical and Magnetic Materials Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology Electronic band structure Spin-½ |
| Zdroj: | Physical Review B. 92 |
| ISSN: | 1550-235X 1098-0121 |
| Popis: | The electronic structure of (group-III) metal-monochalcogenide monolayers exhibits many unusual features. Some, such as the unusually distorted upper valence band dispersion we describe as a 'caldera', are primarily the result of purely orbital interactions. Others, including spin splitting and wavefunction spin-mixing, are directly driven by spin-orbit coupling. We employ elementary group theory to explain the origins of these properties, and use a tight-binding model to calculate the phenomena enabled by them, such as band-edge carrier effective g-factors, optical absorption spectrum, conduction electron spin orientation, and a relaxation-induced upper valence band population inversion and spin polarization mechanism. Comment: final version |
| Databáze: | OpenAIRE |
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