Staggered Flux Phase in a Model of Strongly Correlated Electrons

Details Staggered Flux Phase in a Model of Strongly Correlated Electrons Staggered Flux Phase in a Model of Strongly Correlated Electrons

2002-02-11

arxiv.org/abs/cond-mat/0202188v4

Phys. Rev. Lett. 89, 056404 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

Version to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.89.056404

We present numerical evidence for the existence of a staggered flux (SF) phase in the half-filled two-leg t-U-V-J ladder, with true long-range order in the counter-circulating currents. The density-matrix renormalization-group (DMRG) / finite-size scaling approach, generalized to describe complex-valued Hamiltonians and wavefunctions, is employed. The SF phase exhibits robust currents at intermediate values of the interaction strength.

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