PMID: 15245252Jul 13, 2004Paper

Enhancement of pairing correlation by t' in the two-dimensional extended t-J model

Physical Review Letters
C T ShihY C Chen

Abstract

We investigate the effects of the next-nearest-neighbor (t') and the third-nearest-neighbor (t") hopping terms on superconductivity correlation in the 2D hole-doped extended t-J model based on the variational Monte Carlo, mean-field calculation and exact diagonalization method. Despite the diversity of the methods employed, the results all point to a consistent conclusion: While the d-wave superconductivity correlation is slightly suppressed by t' and t" in underdoped regions, it is greatly enhanced in the optimal and overdoped regions. The optimal Tc is a result of the balance of these two opposite trends.

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Citations

May 17, 2019·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Huai-Xiang HuangYan Chen
Nov 22, 2011·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Khee-Kyun Voo
Aug 12, 2014·Physical Review Letters·Philippe CorbozMatthias Troyer
Aug 11, 2005·Physical Review Letters·Tiago C Ribeiro, Xiao-Gang Wen

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