Pressure dependence of the superconducting transition temperature of MgCNi3

G GARBARINO; M MONTEVERDE; M. NUÑEZ REGUEIRO; C. ACHA; RUBEN WEHT; T HE; KA KEGAN; N ROGADO; M HAYWARD; RJ CAVA

PHYSICA C - SUPERCONDUTIVITY

ELSEVIER SCIENCE BV

Año: 2004 vol. 408 p. 754 - 755

0921-4534

The new superconductor MgCNi3 with a TC8 K is an interesting candidate for non-conventional superconductivity as it is in the borderline of ferromagnetism. We have performed a systematic study of several samples of this compound under pressures up to 25 GPa, measuring the electrical resistivity between 1 and 300 K. We observe a slight increase of the critical superconducting transition temperature at high pressures. Our results are compared with the evolution under pressure of the calculated electronic band structure.