Visualization of Vortex Bound States in Polarized Fermi Gases at Unitarity

Journal Article · Fri Feb 09 00:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.060406· OSTI ID:20955437

Hui, Hu ^[1]; Xiaji, Liu; Drummond, Peter D ^[2]

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1. Department of Physics, Renmin University of China, Beijing 100872 (China)
2. ARC Centre of Excellence for Quantum-Atom Optics, Department of Physics, University of Queensland, Brisbane, Queensland 4072 (Australia)

We theoretically analyze a single vortex in a spin polarized 3D trapped atomic Fermi gas near a broad Feshbach resonance. Above a critical polarization the Andreev-like bound states inside the core become occupied by the majority spin component. As a result, the local density difference at the core center suddenly rises at low temperatures. This provides a way to visualize the lowest bound state using phase-contrast imaging. As the polarization increases, the core expands gradually and the energy of the lowest bound state decreases.

• OSTI ID: 20955437
• Journal Information: Physical Review Letters, Vol. 98, Issue 6; Other Information: DOI: 10.1103/PhysRevLett.98.060406; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOUND STATE
FERMI GAS
POLARIZATION
RESONANCE
SPIN
SPIN ORIENTATION
TRAPPING
UNITARITY