Enhancement of superconductivity by pressure-driven competition in electronic order

Xiao-Jia Chen (), Viktor V. Struzhkin, Yong Yu, Alexander F. Goncharov, Cheng-Tian Lin, Ho-kwang Mao () and Russell J. Hemley ()
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Xiao-Jia Chen: Geophysical Laboratory, Carnegie Institution of Washington
Viktor V. Struzhkin: Geophysical Laboratory, Carnegie Institution of Washington
Yong Yu: Geophysical Laboratory, Carnegie Institution of Washington
Alexander F. Goncharov: Geophysical Laboratory, Carnegie Institution of Washington
Cheng-Tian Lin: Max-Planck-Institut für Festkörperforschung
Ho-kwang Mao: Geophysical Laboratory, Carnegie Institution of Washington
Russell J. Hemley: Geophysical Laboratory, Carnegie Institution of Washington

Nature, 2010, vol. 466, issue 7309, 950-953

Abstract: Competitive pressure Superconductivity often occurs in competition with other types of electronic order, such as antiferromagnetism. For some superconductors, the superconducting transition temperature can be maximized by forcing the critical temperature of the competing order down to zero. Xiao-Jia Chen et al. have now identified a related effect in a high-temperature superconductor, with the application of pressure yielding a striking two-step increase in the transition temperature. This points to a way of making higher transition temperatures through the suppression of the antiferromagnetic phase in the inner CuO2 plane, and the optimization of two competing energy scales (pairing and phase ordering) of different CuO2 planes.

Date: 2010
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DOI: 10.1038/nature09293

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