Exotic Superconducting Phases of Ultracold Atom Mixtures on Triangular Lattices

Simple item page
dc.creatorMathey, L.
dc.creatorTsai, S. -W.
dc.creatorNeto, A. H. Castro
dc.date2006-09-08
dc.date2007-03-12
dc.date.accessioned2026-07-07T08:39:18Z
dc.date.available2026-07-07T08:39:18Z
dc.descriptionWe study the phase diagram of two-dimensional Bose-Fermi mixtures of ultracold atoms on a triangular optical lattice, in the limit when the velocity of bosonic condensate fluctuations is much larger than the Fermi velocity. We contrast this work with our previous results for a square lattice system in Phys. Rev. Lett. {\bf 97}, 030601 (2006). Using functional renormalization group techniques we show that the phase diagrams for a triangular lattice contain exotic superconducting phases. For spin-1/2 fermions on an isotropic lattice we find a competition of $s$-, $p$-, extended $d$-, and $f$-wave symmetry, as well as antiferromagnetic order. For an anisotropic lattice, we further find an extended p-wave phase. A Bose-Fermi mixture with spinless fermions on an isotropic lattice shows a competition between $p$- and $f$-wave symmetry. These phases can be traced back to the geometric shapes of the Fermi surfaces in various regimes, as well as the intrinsic frustration of a triangular lattice.
dc.description6 pages, 4 figures, extended version, slight modifications
dc.identifierhttps://arxiv.org/abs/cond-mat/0609212
dc.identifierhttp://arxiv.org/abs/cond-mat/0609212
dc.identifierPhysical Review B, 75, 174516 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.174516
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141025
dc.subjectSuperconductivity
dc.titleExotic Superconducting Phases of Ultracold Atom Mixtures on Triangular Lattices
dc.typetext

Files

Collections

arXiv