High pressure study of the organic compound (TMTTF)2BF4
DPMC, University of Geneva, 24 quai Ernest-Ansermet, 1211 Genève 4, Switzerland
Corresponding author: a Anna-Sabina.Ruetschi@unige.ch
Revised: 26 November 2008
Published online: 9 January 2009
High pressure resistivity measurements of the organic compound (TMTTF)2BF4 have been performed in a newly developped Bridgman cell providing good pressure conditions on a wide pressure range. For the first time in this compound a zero resistance superconducting state is observed between 3 and 4 GPa. At temperatures above the superconducting transition, the resistivities of the two high quality samples show a different behavior. One sample, provides indications for a magnetic quantum critical point at the maximum of Tc, whereas in the other antiferromagnetic spin-fluctuations are present above Tc.
PACS: 74.70.Kn – Organic superconductors / 74.62.Fj – Pressure effects
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009