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Your search keyword '"Chen, Yan"' showing total 7 results
Start Over Author "Chen, Yan" Journal new journal of physics Publisher iop publishing
7 results on '"Chen, Yan"'

2. Inter-layer modified -wave superconductivity in an effectively doped spin-1 ladder.

Author

Hou, Jie, Lee, Ting-Kuo, Guo, Yaowu, Lou, Jie, and Chen, Yan

Subjects
SUPERCONDUCTIVITY, DENSITY matrices, STATISTICAL correlation, RENORMALIZATION group, BINDING energy, RENORMALIZATION (Physics)
Abstract

We construct a four-leg spin-1/2 t–J type model to simulate a doped two-leg spin-1 antiferromagnetic Heisenberg ladder. Employing renormalized mean-field theory with simple Gutzwiller factors, we obtain three degenerate superconducting states with different pairing symmetry. Through improving the Gutzwiller factors, we find that the state C with inter-layer modified -wave pairing has the lowest energy in a large doping range. Besides, we use the density matrix renormalization group method to solve the model. The negative binding energy reveals the pairing tendency, and the pair–pair correlation functions exhibit a slowly decaying behavior on certain types of bonds. From the pair correlations, we confirm the inter-layer modified -wave superconducting state as the ground state of the model. [ABSTRACT FROM AUTHOR]

Published
2019
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