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arXiv · 1008.4191

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

Yong-Wei Zhong·Tao Li·Qiang Han
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Abstract

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.

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Yong-Wei Zhong, Tao Li, Qiang Han. 2011-03-27. Monte Carlo study of thermal fluctuations and Fermi-arc formation in d-wave superconductors. https://doi.org/10.1103/physrevb.84.024522

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