|
|
|||||||||||||||
|
Cerca | Lliura | Ajuda | Servei de Biblioteques | Sobre el DDD | Català English Español | |||||||||
| Pàgina inicial > Articles > Articles publicats > Terahertz spin-light coupling in proximitized Dirac materials |
| Data: | 2024 |
| Resum: | The two-dimensional (2D) materials are highly susceptible to the influence of their neighbors, thereby enabling the design by proximity phenomena. We reveal a remarkable terahertz (THz) spin-light interaction in 2D Dirac materials that arises from magnetic and spin-orbital proximity effects. The dynamical realization of the spin-charge conversion, the electric dipole spin resonance (EDSR), of Dirac electrons displays distinctive THz features upon emerging spin-pseudospin proximity terms in the Hamiltonian. To capture the effect of fast pseudospin dynamics on the electron spin, we develop a mean-field theory and complement it with a quantum-mechanical treatment. As a specific example, we investigate the THz response of a single graphene layer proximitized by a magnetic substrate. Our analysis demonstrates a strong enhancement and anomalous polarization structure of the THz-light absorption, which can enable THz detection and efficient generation and control of spins in spin-based quantum devices. The identified coupled spin-pseudospin dynamics is not limited to EDSR and may influence a broad range of optical, transport, and ultrafast phenomena. |
| Ajuts: | Agencia Estatal de Investigación PID2019-111773RB-I00 Agencia Estatal de Investigación PID2022-143162OB-I00 Agencia Estatal de Investigación CEX2021-001214-S |
| 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: | Dirac electrons ; Electric dipole spin resonance ; Light couplings ; Light interaction ; Magnetic orbitals ; Proximity effects ; Pseudospin ; Spin-orbitals ; Tera Hertz ; Two-dimensional |
| Publicat a: | Physical review B, Vol. 109, Issue 20 (May 2024) , art. L201406, ISSN 2469-9969 |
Postprint 9 p, 4.3 MB |