Monte Carlo study of thermal fluctuations and Fermi-arc formation in d-wave superconductors

From the perspective of thermal fluctuations, we investigate the pseudogap phenomena in underdoped high-temperature curpate superconductors. We present a local update Monte Carlo procedure based on the Green's function method to sample the fluctuating pairing field. The Chebyshev polynomial met...

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Bibliographic Details
Published in:arXiv.org 2011-03
Main Authors: Yong-Wei, Zhong, Li, Tao, Han, Qiang
Format: Article
Language:English
Subjects:
Chebyshev approximation
Green's functions
High temperature
Monte Carlo simulation
Polynomials
Spectra
Variation
Online Access:Get full text
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Summary:From the perspective of thermal fluctuations, we investigate the pseudogap phenomena in underdoped high-temperature curpate superconductors. We present a local update Monte Carlo procedure based on the Green's function method to sample the fluctuating pairing field. The Chebyshev polynomial method is applied to calculate the single-particle spectral function directly and efficiently. The evolution of Fermi arcs as a function of temperature is studied by examining the spectral function at Fermi energy as well as the loss of spectral weight. Our results signify the importance of the vortex-like phase fluctuation on the formation of Fermi arcs.
ISSN:2331-8422
DOI:10.48550/arxiv.1008.4191