Study of rapid oscillations in (TMTSF)2FSO3 under pressure and under very high magnetic fields

Abstract

(TMTSF)2FSO3 is very special in that its electric transport properties are described by electrons from two-dimensional Fermi surfaces (FS) whereas those in most other Bechgaard salts are intrinsically explained with electrons from weakly warped quasi-one- dimensional FS. Conventional Shubnikov-dc Haas oscillations, described with the Lifshitz-Kosevich formula, has been observed. In this study, we measured magnetoresistance along the least conducting direction (c*) under pressures of up to 11 kbars and magnetic fields of up to 55 T, generated in a pulsed magnet, and found that the oscillations preserved two-dimensional nature to the highest measured field. There is no field-induced electronic transition. Pressure dependence and magnetic field dependence of parameters of oscillations are presented and discussed. © 2005 Elsevier B.V. All rights reserved.