Title: Phase separation in the<i>t</i>-<i>J</i>model
Abstract: 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.
Publication Year: 1990
Publication Date: 1990-01-22
Language: en
Type: article
Indexed In: ['crossref', 'pubmed']
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Cited By Count: 843
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