Anomalously Wide Superconducting Phase of One-Dimensional Organic Conductor (TMTTF)2SbF6

We measured the temperature dependence of resistivity of (TMTTF) 2 SbF 6 under high pressures up to 10 GPa. We observed superconductivity in the title compound for the first time when the high pressure exceeded 5 GPa. The local maximum of the superconducting transition temperatures was T c = 2.8 K at 6 and 9 GPa. The superconducting phase of (TMTTF) 2 SbF 6 was observed in an anomalously wide pressure range of 5.4 < P ≤9 GPa. We discuss this particular superconducting phase and the electron correlation phase of (TMTTF) 2 SbF 6 under high pressure.