IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Half-metal phases in a quantum wire with modulated spin-orbit interaction
Autor/es:
FERRAZ, A.; JAPARIDZE, G.I.; CABRA, D.C.; JOHANNESSON, H.; ROSSINI, G.L.
Revista:
Physical Review B
Editorial:
American Physical Society
Referencias:
Lugar: New York; Año: 2017 vol. 96 p. 1 - 5
ISSN:
2469-9950
Resumen:
We propose a spin filter device based on the interplay of a modulated spin-orbit interaction and a uniform external magnetic field acting on a quantum wire. Half-metal phases, where electrons with only a selected spin polarization exhibit ballistic conductance, can be tuned by varying the magnetic field. These half-metal phases are proven to be robust against electron-electron repulsive interactions. Our results arise from a combination of explicit band diagonalization, bosonization techniques, and extensive density matrix renormalization group computations.