DMRG study of spin-imbalanced fermionic cold atoms trapped on optical ladders --- evolution of spin-aligned domains

ORAL

Abstract

DMRG is used to study spin-imbalanced fermionic cold atoms that reside on a two-leg optical ladder and trapped to a finite region to explore the spin structure. We find that the ground state comprises phase-separated regions that include fully spin-polarized, partially polarized, and non-polarized domains for strong on-site repulsions. We determine the conditions for realizing large itinerant ferromagnetic (fully polarized metallic) regions.

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Authors

  • Masahiko Okumura

    • CCSE, Japan Atomic Energy Agency and CREST(JST)

  • Susumu Yamada

    • CCSE, Japan Atomic Energy Agency and CREST(JST)

  • Masahiko Machida

    • CCSE, Japan Atomic Energy Agency and CREST(JST)
    • Japan Atomic Energy Agency

  • Hideo Aoki

    • Department of Physics, University of Tokyo