Abstract
The pressure-temperature phase diagram of the Bechgaard salts (TMTSF)2X, where TMTSF is tetramethyltetraselenafulvalen and X = PF6 −, ClO4 −, ReO4 − etc., is marked by the existence of both spin density wave (SDW) and superconducting phases [1]. Both phases are also observed in the magnetic field-temperature phase diagram. Superconductivity is destroyed in a moderate magnetic field, and in high magnetic field a transition to the SDW state or field-induced SDW (FISDW) state is found [2]. Whereas the currently accepted theoretical model of the FISDW [3, 4] known as the “Standard Model” has tended to neglect the role of the superconductivity, in a recent theory proposed by Yakovenko the superconductivity in the Bechgaard salts plays a non-trivial role [5]. The purpose of this work is to search for the FISDW in (TMTSF)2NO3, a salt that is not found to superconduct, and to clarify some of the outstanding puzzles of the FISDW.
Published Version
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