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arXiv · 1212.4051

Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps

O. V. Marchukov·A. G. Volosniev·D. V. Fedorov·A. S. Jensen·N. T. Zinner
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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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O. V. Marchukov, A. G. Volosniev, D. V. Fedorov, A. S. Jensen, N. T. Zinner. 2013-06-24. Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps. https://doi.org/10.1088/0953-4075%2F46%2F13%2F134012

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