Fermi surface and low temperature structure in (DMET-TSeF) 2Au(CN)2

K. Kato, K. Oshima, T. Kambe, Y. Nogami, T. Sasaki, M. Motokawa, R. Kato

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The title compound is one of the DMET-TSeF salts which are quasi-one-dimensional organic metals at room temperatures. We show that the compound has a closed Fermi surface using the angle-dependent magnetoresistance oscillation (AMRO) method together with magnetoresistance and magnetization quantum oscillation measurements at low temperatures. By the X-ray measurement, we confirm that the structural phase transition observed around 180 K is related to the anomaly observed in the temperature dependence of the resistivity [1]. The nesting vector has the direction of 0.5a*+0.5c*. The obtained low temperature closed Fermi surface has about 4 % of the first Brillouin zone area. The AMRO data show the existence of a very anisotropic Fermi surface where the diameter perpendicular to the most conducting a direction is about 0.5 c*. The possible origin of the low temperature closed Fermi surface is discussed and the relation to the ordering of anion molecules is considered as the probable reason.

Original languageEnglish
Pages (from-to)577-578
Number of pages2
JournalSynthetic Metals
Publication statusPublished - 2003 Apr 4


  • Organic conductors
  • Transport Measurement
  • X-ray diffraction


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