Photoemission Spectra in t-J Ladders with Two Legs

Details Photoemission Spectra in t-J Ladders with Two Legs Photoemission Spectra in t-J Ladders with Two Legs

1996-06-19

arxiv.org/abs/cond-mat/9606144v1

Physics

Condensed Matter

9 pages, RevTex, to be published in Phys. Rev. B (RC)

Scientific paper

10.1103/PhysRevB.54.R3718

Photoemission spectra for the isotropic two-leg t-J ladder are calculated at various hole-doping levels using exact diagonalization techniques. Low-energy sharp features caused by short-range antiferromagnetic correlations are observed at finite doping levels close to half-filling, above the naive Fermi momentum. These features should be observable in angle-resolved photoemission experiments. In addition, the formation of a d-wave pairing condensate as the ratio J/t is increased leads to dynamically generated spectral weight for momenta close to $k_F$ where the $d_{x^2-y^2 }$-order parameter is large.

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