This paper reviews our recent studies of charge-transfer salts of the ion bis(ethylenedithio)tetrathiafulvalene (ET). The first part describes magneto-transport measurements which demonstrate modifications of the band structures of (ET)2KHg(SCN)4 and beta''-(ET)2AuBr2 due to antiferromagnetic order; the antiferromagnetism is probably caused by the presence of spin-density waves. The second part reports cyclotron resonance studies of (ET)2KHg(SCN)4, (ET)2NH4Hg(SCN)4 and (ET)2Cu(SCN)2, which reveal effective masses between 0.4m(e) and 1.2m(e). In contrast, magneto-transport measurements reveal masses between 2.0m(e) and 3.5m(e). The difference between the results is thought to indicate the strength of electron-electron interactions in these materials.
Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Access type
Accès restreint
Publication date
1993
Language
Anglais
Conference
"33RD YAMADA CONF / 10TH INTERNATIONAL CONF ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS ( HMSP 92 )", CHIBA(Japan) (Aug 03-07, 1992)
Singleton, J. ; Pratt, FL. ; Doporto, M. ; Caulfield, JM. ; Hill, SO. ; et. al. Magnetooptical and Magnetotransport Studies of Electron Electron Interactions in Organic Conductors Using Fields Up To 50-t.33RD YAMADA CONF / 10TH INTERNATIONAL CONF ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS ( HMSP 92 ) (CHIBA(Japan), Aug 03-07, 1992). In: Physica B: Condensed Matter, Vol. 184, no. 1-4, p. 470-480 (1993)
