Effect of pressure on the superconducting transition temperature of doped and neutron-damaged MgB2

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.

References in corpus (8)

• Superconductivity in Dense $Mg{B}_2$ Wires
• Systematic effects of carbon doping on the superconducting properties of Mg(B${}_{1-x}$C${}_x$)${}_2$
• Electronic Structure, Electron-Phonon Coupling, and Multiband Effects in MgB2
• Crystal Chemistry of Carbon-Substituted MgB2
• Carbon-substitution effect on the electronic properties of MgB${}_2$ single crystals
• Carbon doping of superconducting magnesium diboride
• Dependence of the superconducting transition temperature of single- and polycrystalline MgB2 on hydrostatic pressure
• Liquid-to-liquid phase transition in pancake vortex systems

Cited by in corpus (6)

• Variation of the magnetic ordering in GdT${}_2$Zn${}_{20}$ (T= Fe, Ru, Os, Co, Rh and Ir) and its correlation with the electronic structure of isostructural YT${}_2$Zn${}_{20}$
• Superconductivity of magnesium diboride
• Asymmetric superconductivity in metallic systems
• Pressure induced FFLO instability in multi-band superconductors
• Quantum criticality in inter-band superconductors
• Fluctuations in a superconducting quantum critical point of multi-band metals