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20 April 2024

» arxiv » cond-mat/0411149

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Effect of pressure on the superconducting transition temperature of doped and neutron-damaged MgB2
S. L. Bud’ko ; R. H. T. Wilke ; M. Angst ; P. C. Canfield ;
Date:	5 Nov 2004
Subject:	Superconductivity \| cond-mat.supr-con
Abstract:	Measurements of the superconducting transition temperatures for Al-doped, C-doped and neutron-damaged-annealed MgB2 samples under pressure up to ~8 kbar are presented. The dT_c/dP values change systematically with the decrease of the ambient pressure T_c in a regular fashion. The evolution of the pressure derivatives can be understood assuming that the change in phonon spectrum is a dominant contribution to dT_c/dP.
Source:	arXiv, cond-mat/0411149
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