Physical review. B, Condensed matter

Dilute gas of electron pairs in thet-Jmodel

H. Q. Lin

Published Sep 1, 1991• 38 citations

Abstract

The bound state of electron pairs in the t-J model is investigated. It is shown that for 2t<J<3.828t the hole-rich phase is a low-density superfluid of electron pairs.Received 1 April 1991DOI:https://doi.org/10.1103/PhysRevB.44.4674©1991 American Physical Society

DOI: 10.1103/physrevb.44.4674

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Physical review. B, Condensed matter

Dilute gas of electron pairs in thet-Jmodel

H. Q. Lin

Published Sep 1, 1991• 38 citations

Publisher

Abstract

DOI: 10.1103/physrevb.44.4674

Related papers

Phase separation in thet-Jmodel

Victor J. Emery, Steven Allan Kivelson, H. Q. Lin

It is shown that, for the t-J model, dilute holes in an antiferromagnet are unstable against phase separation into a hole-rich and a no-hole phase. When the spin-exchange interaction J exceeds a critical value ${J}_{c}$ , the hole-rich phase has no electrons. It is proposed that for J slightly less than ${J}_{c}$ the hole-rich phase is a low-density superfluid of electron pairs. A brief discussion of phase separation in other related models is given.It is shown that, for the t-J model, dilute holes in an antiferromagnet are unstable against phase separation into a hole-rich and a no-hole phase. When the spin-exchange interaction J exceeds a critical value ${J}_{c}$, the hole-rich phase has no electrons. It is proposed that for J slightly less than ${J}_{c}$ the hole-rich phase is a low-density superfluid of electron pairs. A brief discussion of phase separation in other related models is given.