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| Pàgina inicial > Articles > Articles publicats > Giant valley-polarized spin splittings in magnetized Janus Pt dichalcogenides |
| Data: | 2022 |
| Resum: | We reveal giant proximity-induced magnetism and valley-polarization effects in Janus Pt dichalcogenides (such as SPtSe), when bound to the europium oxide (EuO) substrate. Using first-principles simulations, it is surprisingly found that the charge redistribution, resulting from proximity with EuO, leads to the formation of two K and K' valleys in the conduction bands. Each of these valleys displays its own spin polarization and a specific spin texture dictated by broken inversion and time-reversal symmetries, and valley-exchange and Rashba splittings as large as hundreds of meV. This provides a platform for exploring spin-valley physics in low-dimensional semiconductors, with potential spin transport mechanisms such as spin-orbit torques much more resilient to disorder and temperature effects. |
| Ajuts: | European Commission 881603 Ministerio de Economía y Competitividad SEV-2017-0706 Agencia Estatal de Investigación MAT2016-75952-R |
| Nota: | Altres ajuts: ICN2 is funded by the CERCA Programme/Generalitat de Catalunya. |
| Drets: | Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió acceptada per publicar |
| Matèria: | Charge redistribution ; Dichalcogenides ; Europium oxide ; First-principles simulations ; Induced magnetism ; Polarization effect ; Polarized spins ; Spin splittings ; Spin textures ; Spin-polarization |
| Publicat a: | Physical review B, Vol. 105, issue 4 (Jan. 2022) , art. A100, ISSN 2469-9969 |
Postprint 7 p, 1.1 MB |