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Unidirectional d-wave superconducting domains in the two-dimensional t-J model

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arxiv 0708.0788 v2 pith:FJPYUNNJ submitted 2007-08-06 cond-mat.str-el

Unidirectional d-wave superconducting domains in the two-dimensional t-J model

Marcin Raczkowski , Manuela Capello , Didier Poilblanc , Raymond Fresard , Andrzej M. Oles This is my paper
classification cond-mat.str-el
keywords domainsd-wavemodelmodulatedsuperconductingunidirectionalalongaxis
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Motivated by the recently observed pattern of unidirectional domains in high-T_c superconductors [Y. Kohsaka et al., Science 315, 1380 (2007)], we investigate the emergence of spontaneous modulations in the d-wave superconducting resonating valence bond phase using the t-J model at x=1/8 doping. Half-filled charge domains separated by four lattice spacings are found to form along one of the crystal axis leading to modulated superconductivity with out-of-phase d-wave order parameters in neighboring domains. Both renormalized mean-field theory and variational Monte Carlo calculations yield that the energies of modulated and uniform phases are very close to each other.

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  1. Pair-Density Wave from Doping an Altermagnetic Mott Insulator

    cond-mat.str-el 2026-07 conditional novelty 7.0

    Doping an altermagnetic Mott insulator on the checkerboard t-J model yields a PDW coexisting with stripes under the reversed locking Q_PDW ≈ 2 Q_Stripe.