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1997 | 91 | 1 | 203-212
Article title

Universal Critical Quantum Properties of Cuprate Superconductors

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EN
Abstracts
EN
Using the scaling theory of quantum critical phenomena we explore the occurrence of universal critical behavior at the insulator-to-superconductor and superconductor-to-normal state transitions at zero temperature. Experimentally, these phase transitions are driven by doping and correspond to critical end points of the phase transition line in the temperature-hole concentration plane. Provided that the order parameter is a complex scalar in two dimensions, and that the London relation between superfluid number density and magnetic penetration depth holds, the scaling theory predicts universal behavior close to the insulator-to-superconductor transition. In particular, transition temperature and zero temperature penetration depth are universally related and the sheet resistance adopts a universal value. These predictions agree remarkably well with available experimental data and provide useful constraints for a microscopic theory.
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Year
Volume
91
Issue
1
Pages
203-212
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Dates
published
1997-01
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author
  • IBM Research Division, Zurich Research Laboratory, Säumerstr. 4, 8803 Rüschlikon, Switzerland
References
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv91z117kz
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