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

2000/02/15 by Sung-Sik Lee, Lee, Sung-Sik, Sung-Ho Suck Salk +1
Physics and Astronomy · #FOS: Physical sciences #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con) #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.cond-mat/0002213

4 pages, 6 figures

arxiv created 2000/02/15 · arxiv updated 2009/11/30

Abstract

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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