RT Journal Article
T1 Rashba coupling and spin switching through surface states of Dirac semimetals
A1 Baba, Yuriko Caterina
A1 Domínguez-Adame Acosta, Francisco
A1 Platero, Gloria
A1 Molina, Rafael A.
AB We study the effect of the Rashba spin-orbit coupling on the Fermi arcs of topological Dirac semimetals. The Rashba coupling is induced by breaking the inversion symmetry at the surface. Remarkably, this coupling could be enhanced by the interaction with the substrate and controlled by an external electric field. We study analytically and numerically the rotation of the spin of the surface states as a function of the electron's momentum and the coupling strength. Furthermore, a detailed analysis of the spin-dependent two-terminal conductance is presented in the clean limit and with the addition of a random distribution of impurities. Depending on the magnitude of the quadratic terms in the Hamiltonian, the spin-flip conductance may become dominant, thus showing the potential of the system for spintronic applications, since the effect is robust even in the presence of disorder.
PB IOP Publishing
SN 1367-2630
YR 2021
FD 2021-02
LK https://hdl.handle.net/20.500.14352/7880
UL https://hdl.handle.net/20.500.14352/7880
LA eng
NO ©2021 IOP Publishing LTDWe acknowledge financial support through Spanish grants PGC2018-094180-B-I00 (MCIU/AEI/FEDER, EU), MAT2016-75955, MAT2017-86717-P and PID2019-106820RB-C21 (MINECO/FEDER, EU), CAM/FEDER Project No. S2018/TCS-4342 (QUITEMAD-CM) and CSIC Research Platform PTI-001. G P also acknowledges support from the DFG within SBF 1277 and from the 'UA: Matematica Aplicada a la Teoria de la Materia Condensada' with the Carlos III University.
NO Ministerio de Ciencia e Innovación (MICINN) / FEDER
NO Ministerio de Economía y Competitividad (MINECO) / FEDER
NO Comunidad de Madrid / FEDER
NO Centro Superior de Investigaciones Científicas (CSIC)
NO German Research Foundation (DFG)
DS Docta Complutense
RD 17 abr 2025