Phase diagram of two-dimensional fast-rotating ultracold fermionic atoms near unitarity

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.023601· OSTI ID:21408278

Nikolic, Predrag ^[1]

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1. Department of Physics, Rice University, Houston, Texas 77005 (United States)

By analyzing vortex lattices, re-entrant Cooper pairing, and Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states in a single theoretical framework, we explore how vortices and spin textures join to protect superconductivity against large magnetic fields. We use a rapidly rotating ultracold gas of fermionic atoms near unitarity as a model system amenable to experimental exploration and discover a hierarchy of spin-polarized and FFLO phases in which a metal or a band insulator of unpaired particles coexists with a spatially modulated superfluid hosting a vortex lattice. Quantum fluctuations can transform these phases into strongly correlated 'vortex-liquid' metals and insulators, respectively. We argue that vortex lattices significantly enhance the stability of FFLO states and discuss prospects for observing these states in cold-atom experiments.

• OSTI ID: 21408278
• Journal Information: Physical Review. A, Vol. 81, Issue 2; Other Information: DOI: 10.1103/PhysRevA.81.023601; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
36 MATERIALS SCIENCE
ATOMS
COOPER PAIRS
FERMIONS
FLUCTUATIONS
LIQUID METALS
MAGNETIC FIELDS
PHASE DIAGRAMS
SPIN
SPIN ORIENTATION
SUPERCONDUCTIVITY
SUPERFLUIDITY
TWO-DIMENSIONAL CALCULATIONS
UNITARITY
VORTICES
ANGULAR MOMENTUM
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FLUIDS
INFORMATION
LIQUIDS
METALS
ORIENTATION
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
VARIATIONS