@article{86370d62c5164288939ba2137c449a86,
title = "Metal-insulator-superconductor transition of spin-3/2 atoms on optical lattices",
abstract = "We use a slave-rotor approach within a mean-field theory to study the competition of metallic, Mott-insulating, and superconducting phases of spin-3/2 fermions subjected to a periodic optical lattice potential. In addition to the metallic, the Mott-insulating, and the superconducting phases that are associated with the gauge symmetry breaking of the spinon field, we identify an emerging superconducting phase that breaks both roton and spinon field gauge symmetries. This superconducting phase emerges as a result of the competition between spin-0 singlet and spin-2 quintet interaction channels naturally available for spin-3/2 systems. The two superconducting phases can be distinguished from each other by quasiparticle weight. We further discuss the properties of these phases for both two-dimensional square and three-dimensional cubic lattices at zero and finite temperatures.",
author = "{De Silva}, {Theja N.}",
note = "Funding Information: The author acknowledges the support of Augusta University, the hospitality of ITAMP at the Harvard-Smithsonian Center for Astrophysics, and KITP at UC–Santa Barbara. The initial part of the research was undertaken at ITAMP and ITAMP is supported by a grant from the National Science Foundation to Harvard University and the Smithsonian Astrophysical Observatory. The research was completed at KITP and was supported in part by the National Science Foundation under Grant No. NSF PHY11-25915. Funding Information: The author acknowledges the support of Augusta University, the hospitality of ITAMP at the Harvard-Smithsonian Center for Astrophysics, and KITP at UC-Santa Barbara. The initial part of the research was undertaken at ITAMP and ITAMP is supported by a grant from the National Science Foundation to Harvard University and the Smithsonian Astrophysical Observatory. The research was completed at KITP and was supported in part by the National Science Foundation under Grant No. NSF PHY11-25915. Publisher Copyright: {\textcopyright} 2018 American Physical Society.",
year = "2018",
month = jan,
day = "29",
doi = "10.1103/PhysRevA.97.013632",
language = "English (US)",
volume = "97",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "1",
}