Crystal structure, electrical transport, electronic band structure and quantum oscillations studies of the organic conducting salt theta-(BETS)(4)HgBr4(C6H5Cl)

Authors
Lyubovskii, RB Pesotskii, SI Konovalikhin, SV Shilov, GV Kobayashi, A Kobayashi, H Nizhankovskii, VI Perenboom, JAAJ Bogdanova, OA Zhilyaeva, EI Lyubovskaya, RN
Citation
Rb. Lyubovskii et al., Crystal structure, electrical transport, electronic band structure and quantum oscillations studies of the organic conducting salt theta-(BETS)(4)HgBr4(C6H5Cl), SYNTH METAL, 123(1), 2001, pp. 149-155
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
03796779 → ACNP
Volume
123
Issue
1
Year of publication
2001
Pages
149 - 155
Database
ISI
SICI code
0379-6779(20010822)123:1<149:CSETEB>2.0.ZU;2-6
Abstract
The theta-(BETS)(4)HgBr4(C6H5Cl) radical cation salt was prepared by electr ochemical crystallization. Its crystal structure was determined by single c rystal X-ray diffraction. The electronic structure was studied by means of the extended Huckel tight-binding band approximation. Electrical resistance of theta-(BETS)(4)HgBr4(C6H5Cl) as a function of temperature shows a metal lic behavior down to 14 K with a metal-semiconductor-metal transition withi n 240-246 K range. Shubnikov-de Haas oscillations showed a low-frequency sp ectrum with two frequencies F-1 = 40 T and F-2 = 210 T, which correspond to the proposed Fermi surface. The third frequency which has to be observed a ccording to the calculations was not revealed in the experimental condition s. (C) 2001 Elsevier Science B.V. All rights reserved.