jpb467366f4_online.jpg (101.81 kB)
Download file

Same as figures 2 and 3 for γ = 5 (left panel) and γ = 10 (right panel)

Download (0 kB)
posted on 2013-06-24, 00:00 authored by O V Marchukov, A G Volosniev, D V Fedorov, A S Jensen, N T Zinner

Figure 4. Same as figures 2 and 3 for γ = 5 (left panel) and γ = 10 (right panel). These results approach the limit of an effective one-dimensional system, i.e. γ 1.


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 imply that the few- and many-body physics of spin–orbit coupled systems can be manipulated by variation of these parameters.