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Article Dans Une Revue Physical Review Letters Année : 2003

Superconducting Gap for a Two-Leg t-J Ladder

Résumé

Single-particle diagonal and off-diagonal Green's functions of a two-leg t-J ladder at 1/8 doping are investigated by exact diagonalizations techniques. A numerically tractable expression for the superconducting gap is proposed and the frequency dependence of the real and imaginary parts of the gap are determined. The role of the low-energy gapped spin modes, whose energies are computed by a (one-step) contractor renormalization procedure, is discussed.

Dates et versions

hal-00003113 , version 1 (07-12-2004)

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Citer

Didier Poilblanc, Douglas J. Scalapino, Sylvain Capponi. Superconducting Gap for a Two-Leg t-J Ladder. Physical Review Letters, 2003, 91 (13), pp.137203. ⟨10.1103/PhysRevLett.91.137203⟩. ⟨hal-00003113⟩
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