Abstract

SILVA-VALENCIA, J.. Spin-selective insulators. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2022, vol.46, n.181, pp.877-898.  Epub Sep 19, 2023. ISSN 0370-3908.  https://doi.org/10.18257/raccefyn.1774.

Spin-selective insulators emerge in systems composed of fermions with two internal degrees of freedom and another carrier, which could be fermionic or bosonic. These insulators are characterized by a gapless state for one kind of fermion and an insulator state for the other, with the latter satisfying a commensurability relation that involves the other carrier. We review the different scenarios where these unique insulators arise, focusing on Bose-Fermi mixtures, the most recent and promising scenario for observing these insulators in cold atom setups.

Keywords : Quantum phase transitions; stcongly correlated systems; Hubbard model; Kondo lattice model; DMRG.

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