DÓRA, Balázs; CAYSSOL, Jérôme; SIMON, Ferenc; MOESSNER, Roderich

doi:10.1103/PhysRevLett.108.056602

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Licencia de uso del documento

DÓRA, Balázs
Department of Physics [Budapest]
BME-MTA Exotic Quantum Phases Research Group

CAYSSOL, Jérôme
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Department of Physics [Berkeley]
Max Planck Institute for the Physics of Complex Systems [MPI-PKS]

SIMON, Ferenc
Department of Physics [Budapest]

Idioma

Article de revue

Este ítem está publicado en

Physical Review Letters. 2012, vol. 108, n° 5, p. 056602

American Physical Society

Resumen en inglés

Time-periodic perturbations can be used to engineer topological properties of matter by altering the Floquet band structure. This is demonstrated for a spin Hall insulator in the presence of monochromatic circularly polarized light. The inherent spin structure of the edge state is influenced by the Zeeman coupling and not by the orbital effect. The photocurrent (and the magnetization along the edge) develops a finite, helicity dependent expectation value and turns from dissipationless to dissipative with increasing radiation frequency, signalling a change in the topological properties. The connection with Thouless' charge pumping and non-equilibrium Zitterbewegung is discussed, together with possible experiments.< Leer menos

Palabras clave en inglés

Spin polarized transport in semiconductors

Phases: geometric - dynamic or topological

Spin transport effects

Graphene

DOI

http://dx.doi.org/10.1103/PhysRevLett.108.056602

Proyecto europeo

Spin dynamics and transport at the quantum edge in low dimensional nanomaterials

Orígen

Importado de Hal

Centros de investigación

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798