Frustrated Cooper pairing and f-wave supersolidity in cold-atom optical lattices

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.83.144506· OSTI ID:21538280

Hung, Hsiang-Hsuan; Lee, Wei-Cheng; Congjun, Wu ^[1]

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1. Department of Physics, University of California, San Diego, California 92093 (United States)

Geometric frustration in quantum magnetism refers to the fact that magnetic interactions on different bonds cannot be simultaneously minimized. The usual Cooper pairing systems favor uniform spatial distributions of pairing phases among different lattice sites without frustration. In contrast, we propose ''frustrated Cooper pairing'' in non-bipartite lattices which leads to supersolid states of Cooper pairs. Not only the amplitudes of the pairing order parameter but also its signs vary from site to site. This exotic pairing state naturally occurs in the p-orbital bands in optical lattices with ultracold spinless fermions. In the triangular lattice, it exhibits an unconventional supersolid state with the f-wave symmetry.

• OSTI ID: 21538280
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 14; Other Information: DOI: 10.1103/PhysRevB.83.144506; (c) 2011 American Institute of Physics; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
ATOMS
COOPER PAIRS
F WAVES
FERMIONS
INTERACTIONS
INTERFERENCE
LASER RADIATION
MAGNETISM
ORDER PARAMETERS
SPATIAL DISTRIBUTION
STARK EFFECT
SYMMETRY
DIMENSIONLESS NUMBERS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
PARTIAL WAVES
RADIATIONS