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Pseudogaps, dopants, and strong disorder in cuprate high-temperature superconductors

REVIEW ARTICLE

J C Phillips1, A Saxena2 and A R Bishop2

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Strong electronic nanoscale disorder is present in all cuprate high-temperature superconductors, interwoven with the microscopic mechanisms responsible for both the high superconductive transition temperatures and many normal state transport anomalies. Disorder is revealed most dramatically in high-resolution scanning tunnelling microscopy experiments, while its origins at the atomic level have been studied by several other techniques. The review reassesses the significance of many other 'mean field' experiments in the context of strong disorder, with emphasis on the effects of high-mobility dopants and long-range strain fields.


PACS

74.72.-h Cuprate superconductors (high-Tc and insulating parent compounds)

74.62.-c Transition temperature variations

74.25.Jb Electronic structure

71.30.+h Metal-insulator transitions and other electronic transitions

74.25.Dw Superconductivity phase diagrams

68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)

74.25.Kc Phonons

Subjects

Superconductivity

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Dates

Issue 12 (December 2003)

Received 10 June 2003

Published 13 November 2003



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