Origin of the Quasiparticle Peaks of Spectral Functions in High $T_c$ Cuprates

Details Origin of the Quasiparticle Peaks of Spectral Functions in High $T_c$ Cuprates Origin of the Quasiparticle Peaks of Spectral Functions in High $T_c$ Cuprates

2000-02-15

arxiv.org/abs/cond-mat/0002213v1

Physics

Condensed Matter

Superconductivity

4 pages, 6 figures

Scientific paper

Based on the SU(2) slave-boson approach to the t-J Hamiltonian, we examine the cause of the sharp peaks('quasiparticle' peaks) in the observed spectral functions in high $T_c$ cuprates. The computed results reveal that the spectral weight of the sharp peaks increases with hole doping rate in agreement with observation. It is shown that the observed sharp peaks are attributed to the enhancement of spinon pairing(spin singlet pair formation) by the presence of holon pair bosons in the superconducting state.

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