Collective excitation of quantum wires and effect of spin-orbit coupling in the presence of a magnetic field along the wire

Hyun C. Lee, Sung Ryul Yang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The band structure of a quantum wire with the Rashba spin-orbit coupling develops a pseudogap in the presence of a magnetic field along the wire. In such a system spin mixing at the Fermi wave vectors - kF and kF can be different. We have investigated, using bosonization techniques, the collective mode of this system, and found that the velocity of this collective excitation depends sensitively on the strength of the Rashba spin-orbit interaction and magnetic field. Our result suggests that the strength of the spin-orbit interaction can be determined from the measurement of the velocity.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number24
DOIs
Publication statusPublished - 2005 Dec 15

Fingerprint

Semiconductor quantum wires
quantum wires
spin-orbit interactions
Orbits
wire
Wire
Magnetic fields
orbits
magnetic fields
excitation
Band structure

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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abstract = "The band structure of a quantum wire with the Rashba spin-orbit coupling develops a pseudogap in the presence of a magnetic field along the wire. In such a system spin mixing at the Fermi wave vectors - kF and kF can be different. We have investigated, using bosonization techniques, the collective mode of this system, and found that the velocity of this collective excitation depends sensitively on the strength of the Rashba spin-orbit interaction and magnetic field. Our result suggests that the strength of the spin-orbit interaction can be determined from the measurement of the velocity.",
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AU - Lee, Hyun C.

AU - Yang, Sung Ryul

PY - 2005/12/15

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N2 - The band structure of a quantum wire with the Rashba spin-orbit coupling develops a pseudogap in the presence of a magnetic field along the wire. In such a system spin mixing at the Fermi wave vectors - kF and kF can be different. We have investigated, using bosonization techniques, the collective mode of this system, and found that the velocity of this collective excitation depends sensitively on the strength of the Rashba spin-orbit interaction and magnetic field. Our result suggests that the strength of the spin-orbit interaction can be determined from the measurement of the velocity.

AB - The band structure of a quantum wire with the Rashba spin-orbit coupling develops a pseudogap in the presence of a magnetic field along the wire. In such a system spin mixing at the Fermi wave vectors - kF and kF can be different. We have investigated, using bosonization techniques, the collective mode of this system, and found that the velocity of this collective excitation depends sensitively on the strength of the Rashba spin-orbit interaction and magnetic field. Our result suggests that the strength of the spin-orbit interaction can be determined from the measurement of the velocity.

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