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Phase Fluctuations and Spectral Properties of Underdoped Cuprates

M. Franz·A. J. Millis
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Abstract

We consider the effect of classical phase fluctuations on the quasiparticle spectra of underdoped high-$T_c$ cuprate superconductors in the pseudogap regime above $T_c$. We show that photoemission and tunneling spectroscopy data are well accounted for by a simple model in which mean field d-wave quasiparticles are semiclasically coupled to supercurrents induced by fluctuating unbound vortex-antivortex pairs. We argue that the data imply that transverse phase fluctuations are important at temperatures above $T_c$, while longitudinal fluctuations are unimportant at all temperatures.

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M. Franz, A. J. Millis. 1998-10-21. Phase Fluctuations and Spectral Properties of Underdoped Cuprates. https://doi.org/10.1103/physrevb.58.14572

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