The three dimensional stabilization of superconductivity at 12 K in the one dimensional organic superconductor (TMTSF)2PF6 under 11 kbar

Abstract

A study of the contact between the organic superconductor (TMTSF) 2PF6 and an evaporated GaSb layer has shown that the zero resistance superconducting state of (TMTSF)2PF6 under pressure can be stabilized in some regions of the sample up to 12 K. This temperature is about the temperature fixing the development of the one dimensional superconducting fluctuations, as derived from the intrachain pairing energy via electron tunnelling experiments. The experimental data have been explained by an increased interchain coupling in the vicinity of the contact via antimony atoms diffusion. These results indicate possible means of extending superconductivity in the quasi one dimensional organic conductors towards higher temperatures