Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps

O. V. Marchukov; A. G. Volosniev; D. V. Fedorov; A. S. Jensen; Nikolaj Thomas Zinner

doi:10.1088/0953-4075/46/13/134012

Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps

O. V. Marchukov, A. G. Volosniev, D. V. Fedorov, A. S. Jensen, Nikolaj Thomas Zinner

Department of Physics and Astronomy

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

13 Citations (Scopus)

Abstract

We consider a spin-orbit coupled system of particles in an external trap that is represented by a deformed harmonic oscillator potential. The spin-orbit interaction is a Rashba interaction that does not commute with the trapping potential and requires a full numerical treatment in order to obtain the spectrum. The effect of a Zeeman term is also considered. Our results demonstrate that variable spectral gaps occur as a function of strength of the Rashba interaction and deformation of the harmonic trapping potential. The single-particle density of states and the critical strength for superfluidity vary tremendously with the interaction parameter. The strong variations with Rashba coupling and deformation implies that the few- and many-body physics of spin-orbit coupled systems can be manipulated by variation of these parameters.

Translated title of the contribution	Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps
Original language	English
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	46
Issue	134012
ISSN	0953-4075
DOIs	https://doi.org/10.1088/0953-4075/46/13/134012
Publication status	Published - 24 Jun 2013

Keywords

cond-mat.quant-gas
cond-mat.mes-hall
quant-ph

Access to Document

10.1088/0953-4075/46/13/134012

Cite this

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title = "Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps",

abstract = "We consider a spin-orbit coupled system of particles in an external trap that is represented by a deformed harmonic oscillator potential. The spin-orbit interaction is a Rashba interaction that does not commute with the trapping potential and requires a full numerical treatment in order to obtain the spectrum. The effect of a Zeeman term is also considered. Our results demonstrate that variable spectral gaps occur as a function of strength of the Rashba interaction and deformation of the harmonic trapping potential. The single-particle density of states and the critical strength for superfluidity vary tremendously with the interaction parameter. The strong variations with Rashba coupling and deformation implies that the few- and many-body physics of spin-orbit coupled systems can be manipulated by variation of these parameters.",

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author = "{V. Marchukov}, O. and {G. Volosniev}, A. and {V. Fedorov}, D. and {S. Jensen}, A. and Zinner, {Nikolaj Thomas}",

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Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps. / V. Marchukov, O.; G. Volosniev, A.; V. Fedorov, D. et al.
In: Journal of Physics B: Atomic, Molecular and Optical Physics, Vol. 46, No. 134012, 24.06.2013.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps

AU - V. Marchukov, O.

AU - G. Volosniev, A.

AU - V. Fedorov, D.

AU - S. Jensen, A.

AU - Zinner, Nikolaj Thomas

N1 - 18 pages, 6 figures

PY - 2013/6/24

Y1 - 2013/6/24

N2 - We consider a spin-orbit coupled system of particles in an external trap that is represented by a deformed harmonic oscillator potential. The spin-orbit interaction is a Rashba interaction that does not commute with the trapping potential and requires a full numerical treatment in order to obtain the spectrum. The effect of a Zeeman term is also considered. Our results demonstrate that variable spectral gaps occur as a function of strength of the Rashba interaction and deformation of the harmonic trapping potential. The single-particle density of states and the critical strength for superfluidity vary tremendously with the interaction parameter. The strong variations with Rashba coupling and deformation implies that the few- and many-body physics of spin-orbit coupled systems can be manipulated by variation of these parameters.

AB - We consider a spin-orbit coupled system of particles in an external trap that is represented by a deformed harmonic oscillator potential. The spin-orbit interaction is a Rashba interaction that does not commute with the trapping potential and requires a full numerical treatment in order to obtain the spectrum. The effect of a Zeeman term is also considered. Our results demonstrate that variable spectral gaps occur as a function of strength of the Rashba interaction and deformation of the harmonic trapping potential. The single-particle density of states and the critical strength for superfluidity vary tremendously with the interaction parameter. The strong variations with Rashba coupling and deformation implies that the few- and many-body physics of spin-orbit coupled systems can be manipulated by variation of these parameters.

KW - cond-mat.quant-gas

KW - cond-mat.mes-hall

KW - quant-ph

U2 - 10.1088/0953-4075/46/13/134012

DO - 10.1088/0953-4075/46/13/134012

M3 - Journal article

SN - 0953-4075

VL - 46

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 134012

ER -