Quantum phases of atomic Fermi gases with anisotropic spin-orbit coupling

Journal Article · Sat Oct 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.043621· OSTI ID:22095412

Iskin, M. ^[1]; Subasi, A. L. ^[2]

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1. Department of Physics, Koc University, Rumelifeneri Yolu, 34450 Saryer, Istanbul (Turkey)
2. Department of Physics, Faculty of Science and Letters, Istanbul Technical University, 34469 Maslak, Istanbul (Turkey)

We consider a general anisotropic spin-orbit coupling and analyze the phase diagrams of both balanced and imbalanced Fermi gases for the entire BCS-BEC evolution. In the first part, we use the self-consistent mean-field theory at zero temperature, and show that the topological structure of the ground-state phase diagrams is quite robust against the effects of anisotropy. In the second part, we go beyond the mean-field description, and investigate the effects of Gaussian fluctuations near the critical temperature. This allows us to derive the time-dependent Ginzburg-Landau theory, from which we extract the effective mass of the Cooper pairs and their critical condensation temperature in the molecular BEC limit.

• OSTI ID: 22095412
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
COOPER PAIRS
CRITICAL TEMPERATURE
EFFECTIVE MASS
FERMI GAS
FLUCTUATIONS
GINZBURG-LANDAU THEORY
GROUND STATES
L-S COUPLING
MEAN-FIELD THEORY
PHASE DIAGRAMS
TIME DEPENDENCE