Magnetooptical and Magnetotransport Studies of Electron Electron Interactions in Organic Conductors Using Fields Up To 50-t

Singleton, J.;Pratt, FL.;Doporto, M.;Caulfield, JM.;Day, P.;et.al.
(1993) 33RD YAMADA CONF / 10TH INTERNATIONAL CONF ON THE APPLICATION OF HIGH MAGNETIC FIELDS IN SEMICONDUCTOR PHYSICS ( HMSP 92 ) — Location: CHIBA(Japan) (3.August.1992)

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  • Singleton, J.
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  • Pratt, FL.
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  • Doporto, M.
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  • Caulfield, JM.
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  • Day, P.
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Abstract
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.
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Singleton, J., Pratt, FL., Doporto, M., Caulfield, JM., Hill, SO., Janssen, TJBM., Deckers, I., Pitsi, G., Herlach, F., Hayes, W., Perenboom, JAAJ., Kurmoo, M., & Day, P. (1993). Magnetooptical and Magnetotransport Studies of Electron Electron Interactions in Organic Conductors Using Fields Up To 50-t. Physica B: Condensed Matter, 184(1-4), 470-480. https://doi.org/10.1016/0921-4526(93)90400-Z (Original work published 1993)