Phase Fluctuations and Spectral Properties of Underdoped Cuprates

Details Phase Fluctuations and Spectral Properties of Underdoped Cuprates Phase Fluctuations and Spectral Properties of Underdoped Cuprates

1998-05-29

arxiv.org/abs/cond-mat/9805401v2

PRB 58, 14572 (1998).

Physics

Condensed Matter

Superconductivity

8 pages REVTeX, 3 figures included. Final version to appear in Dec. 1 PRB; extensive discussion of the validity of the model a

Scientific paper

10.1103/PhysRevB.58.14572

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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