Half-metal phases in a quantum wire with modulated spin-orbit interaction

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 f...

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Detalles Bibliográficos
Autores principales: Cabra, Daniel Carlos, Rossini, Gerardo Luis, Ferraz, A., Japaridze, G. I., Johannesson, H.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Física
Spin filter device
Quantum wire
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/97990
https://ri.conicet.gov.ar/11336/55586
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.205135
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-97990
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Spin filter device
Quantum wire
spellingShingle Física
Spin filter device
Quantum wire
Cabra, Daniel Carlos
Rossini, Gerardo Luis
Ferraz, A.
Japaridze, G. I.
Johannesson, H.
Half-metal phases in a quantum wire with modulated spin-orbit interaction
topic_facet Física
Spin filter device
Quantum wire
description 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.
format Articulo
Articulo
author Cabra, Daniel Carlos
Rossini, Gerardo Luis
Ferraz, A.
Japaridze, G. I.
Johannesson, H.
author_facet Cabra, Daniel Carlos
Rossini, Gerardo Luis
Ferraz, A.
Japaridze, G. I.
Johannesson, H.
author_sort Cabra, Daniel Carlos
title Half-metal phases in a quantum wire with modulated spin-orbit interaction
title_short Half-metal phases in a quantum wire with modulated spin-orbit interaction
title_full Half-metal phases in a quantum wire with modulated spin-orbit interaction
title_fullStr Half-metal phases in a quantum wire with modulated spin-orbit interaction
title_full_unstemmed Half-metal phases in a quantum wire with modulated spin-orbit interaction
title_sort half-metal phases in a quantum wire with modulated spin-orbit interaction
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/97990
https://ri.conicet.gov.ar/11336/55586
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.205135
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