Journal
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
Volume 15, Issue 8, Pages 1117-1126Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S021797920100468X
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We study mean-field phases of the t-J model with long-range Coulomb interaction. In the order of increasing doping density we find a classical antiferromagnet, charge and spin stripes, and a uniform d-wave superconductor, at the realistic doping parameters. Both in-phase and anti-phase stripes exist as metastable configurations, but the in-phase stripes have a slightly lower energy. The dependence of the stripe width and the inter-stripe spacing on the doping is examined. Effects of fluctuations around the mean-field states are discussed.
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