Mass-imbalanced Fermi gases with spin-orbit coupling

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

DOI:https://doi.org/10.1103/PHYSREVA.84.041610· OSTI ID:22080309

Iskin, M ^[1]; Subasi, A L ^[2]

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

We use the mean-field theory to analyze the ground-state phase diagrams of spin-orbit-coupled mass-imbalanced Fermi gases throughout the BCS-BEC evolution, including both the population-balanced and -imbalanced systems. Our calculations show that the competition between the mass and population imbalance and the Rashba-type spin-orbit coupling gives rise to very rich phase diagrams, involving normal, superfluid, and phase-separated regions. In addition, we find quantum phase transitions between the topologically trivial gapped superfluid and the nontrivial gapless superfluid phases, opening the way for the experimental observation of exotic phenomena with cold atom systems.

• OSTI ID: 22080309
• Journal Information: Physical Review. A, Vol. 84, Issue 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
FERMI GAS
GROUND STATES
L-S COUPLING
MEAN-FIELD THEORY
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SPIN
SUPERFLUIDITY