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Effect of pressure on the superconducting transition temperature of doped and neutron-damaged MgB2 |
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| Authors: | SL Bud&#x;ko RHT Wilke M Angst PC Canfield |
| Institution: | Ames Laboratory, US DOE and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA |
| 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 dTc/dP values change systematically with the decrease of the ambient pressure Tc 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 dTc/dP. |
| Keywords: | Superconductors High pressure MgB2 Doping |
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