Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1999-08-02
Physics
Condensed Matter
Strongly Correlated Electrons
4 RevTex pages; 3 Postscript figures
Scientific paper
It is shown that the isotropic dispersion relation, line shape of the spectral function, and remnant Fermi surface found in recent photoemission experiment in insulating Ca_2CuO_2Cl_2 by Ronning et al.(Science, 282, 2067 (1998)) can be consistently explained by a direct holon hopping process which fundamentally undermines the conventional self-consistent Born approximation approach to the t-J model.
Sheng Donna N.
Ting Samuel C. C.
Weng Zheng-Yu
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