Effect of pressure on the superconducting transition temperature of doped and neutron-damaged MgB2
نویسندگان
چکیده
Measurements of the superconducting transition temperatures for Al-doped, Cdoped 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 .
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