Universal scaling behavior of pseudogap with doping in high Tc cuprates; temperature and doping dependence of spectral intensity

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dc.creatorLee, Sung-Sik
dc.creatorSalk, Sung-Ho Suck
dc.date2002-12-18
dc.date.accessioned2026-07-07T02:48:49Z
dc.date.available2026-07-07T02:48:49Z
dc.descriptionBased on our improved SU(2) slave-boson approach (Phys. Rev. B 64, 052501(2001)) to the t-J Hamiltonian, we report a scaling behavior of pseudogap with doping and the temperature and doping dependence of spectral functions. In addition we discuss the cause of hump and quasi-particle peak in the observed spectral functions of high Tc cuprates. It is demonstrated that the sharpening of the observed quasi-particle peak below Tc is attributed to the bose condensation of holon pair. From the computed ratios of pseudogap $Δ_0$ to both the superconducting temperature Tc and the pseudogap temperature $T^*$ as a function of hole doping concentration x, we find that there exists a universal scaling of these ratios with doping, that is, the hyperbolic scaling behavior of the former, $\frac{2 Δ_0}{k_B T_c} \sim x^{-α}$ with $α\sim 2$ and near doping independence of the latter, $\frac{2 Δ_0}{k_B T^*} \approx 4 \sim 6$ are found.
dc.description5 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0212436
dc.identifierhttp://arxiv.org/abs/cond-mat/0212436
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/20557
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleUniversal scaling behavior of pseudogap with doping in high Tc cuprates; temperature and doping dependence of spectral intensity
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