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Isotope effects in underdoped cuprate superconductors: a quantum critical phenomenon.

Authors
Type
Published Article
Journal
Physical review letters
Publication Date
Volume
86
Issue
21
Pages
4899–4902
Identifiers
PMID: 11384376
Source
Medline

Abstract

We show that the unusual doping dependence of the isotope effects on transition temperature and zero temperature in-plane penetration depth naturally follows from the doping driven 3D-2D crossover and the 2D quantum superconductor to insulator transition in the underdoped limit. Since lattice distortions are the primary consequence of isotope substitution, our analysis clearly reveals the strong involvement of lattice degrees of freedom in mediating superconductivity.

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