Spontaneous Fermi surface symmetry break
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H. Yamase; V. Oganesyan; W. Metzner
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Article
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2006
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Elsevier Science
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English
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We analyze a forward scattering model on a square lattice, which exhibits spontaneous Fermi surface symmetry breaking with a d-wave order parameter: the Fermi surface expands along the k x -axis and shrinks along the k y -axis or vice versa. While the transition is usually first order as a function