On the origin of the Fermi arc phenomena in the underdoped cuprates: signature of KT-type superconducting transition

Details On the origin of the Fermi arc phenomena in the underdoped cuprates: signature of KT-type superconducting transition On the origin of the Fermi arc phenomena in the underdoped cuprates: signature of KT-type superconducting transition

2010-03-09

arxiv.org/abs/1003.1783v1

Physics

Condensed Matter

Superconductivity

5 pages

Scientific paper

We study the effect of thermal phase fluctuation on the electron spectral function $A(k,\omega)$ in a d-wave superconductor with Monte Carlo simulation. The phase degree of freedom is modeled by a XY-type model with build-in d-wave character. We find a ridge-like structure emerges abruptly on the underlying Fermi surface in $A(k,\omega=0)$ above the KT-transition temperature of the XY model. Such a ridge-like structure, which shares the same characters with the Fermi arc observed in the pseudogap phase of the underdoped cuprates, is found to be caused by the vortex-like phase fluctuation of the XY model.

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