Solid State Communications

Transport and EPR studies at ambient pressure in (TMTSF)2-PF6 -Pristine and doped with TMTTF

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We report on transport and EPR studies of (TMTSF)2-PF6, both in its pristine form and when doped with the sulfur analog TMTTF. All samples undergo a single phase transition which can be seen in both the transport and magnetic data and which, in the undoped material, occurs at ∼11.5 K. The effects of a 3% dopant concentration are dramatic: a 40% rise in the transition temperature, a 130% rise in the room- temperature spin susceptibility and a 30% fall in the low-temperature g shift. Possible causes are discussed. © 1981.