Related Experiment Video
Updated: Nov 4, 2025

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
Published on: June 28, 2018
Exotic Vortex States with Discrete Rotational Symmetry in Atomic Fermi Gases with Spin-Orbital-Angular-Momentum
Liang-Liang Wang1,2, An-Chun Ji3, Qing Sun3
1School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China.
Abstract:
We investigate the superfluidity of a two-component Fermi gas with spin-orbital-angular-momentum coupling (SOAMC). Because of the intricate interplay of SOAMC, two-photon detuning and atom-atom interaction, a family of vortex ground states emerges in a broad parameter regime of the phase diagram, in contrast to the usual case where an external rotation or magnetic field is generally required. More strikingly, an unprecedented vortex state, which breaks the continuous rotational symmetry to a discrete one spontaneously, is predicted to occur. The underlying physics are elucidated and verified by numerical simulations. The unique density distributions of the predicted vortex states enable a direct observation in experiment.
Related Concept Videos
Atomic Nuclei: Nuclear Spin State Overview
The Pauli Exclusion Principle
Valence Bond Theory
Valence Bond Theory
Atomic Nuclei: Nuclear Relaxation Processes
Spin–Spin Coupling: One-Bond Coupling

