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Magnetic breakdown and Fermi surface nesting in the organic conductor (BEDT-TTF)2TIHg(SCN)4

✍ Scribed by S. Uji; T. Terashima; H. Aoki; M. Tokumoto; T. Kinoshita; N. Kinoshita; Y. Tanaka; H. Anzai

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 247 KB
Volume: 201
Category: Article
ISSN: 0921-4526
DOI: 10.1016/0921-4526(94)91141-x

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✦ Synopsis

Shubnikov~te Haas (SdH) measurements in the quasi-two-dimensional (2D) organic conductor (BEDT-TTF)2T1Hg(SCN)4 have been carried out to investigate the ground state. The closed orbit of the 2D Fermi surface and the magnetic breakdown orbit are observed above 10 T. Below 3 T, three small closed orbits are found, which are made by the nearly perfect nesting of the one-dimensional (1D) Fermi surface. The results indicate that the ground state is a spin density wave state at low magnetic fields and that the nesting is removed by high magnetic fields.

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