FFLO oscillations and magnetic domains in the Hubbard model with off-diagonal Coulomb repulsion

Details FFLO oscillations and magnetic domains in the Hubbard model with off-diagonal Coulomb repulsion FFLO oscillations and magnetic domains in the Hubbard model with off-diagonal Coulomb repulsion

2011-03-15

arxiv.org/abs/1103.2962v3

J. Stat. Mech. (2011) P12014

Physics

Condensed Matter

Strongly Correlated Electrons

IOP RevTeX class, 18 pages, 13 composite *.eps figures

Scientific paper

10.1088/1742-5468/2011/12/P12014

We observe the effect of non-zero magnetization m onto the superconducting ground state of the one dimensional repulsive Hubbard model with correlated hopping X. For t/2 < X < 2t/3, the system first manifests Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) oscillations in the pair-pair correlations. For m = m1 a kinetic energy driven macroscopic phase separation into low-density superconducting domains and high-density polarized walls takes place. For m > m2 the domains fully localize, and the system eventually becomes a ferrimagnetic insulator.

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