Journal of Experimental and Theoretical Physics
Volume 109, Number 4, 664-666, DOI: 10.1134/S1063776109100124

Electronic Properties of Solid

Possible weakening of the many-body interactions in the organic quasi-two-dimensional metal α-(BETS)2NH4Hg(SCN)4

S. I. Pesotskiĭ, R. B. Lyubovskiĭ, M. V. Kartsovnik, W. Biberacher, N. D. Kushch, A. Kobayashi and B. Zhou

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Abstract

The behavior of the de Haas-van Alphen oscillations in the organic quasi-two-dimensional metal α-(BETS)2NH4Hg(SCN)4 is comprehensively studied as a function of the angle between the magnetic-field direction and the normal to the conducting layers in it. The angular dependence of the oscillation amplitude has minima at angles of ±40° and ±62°, which are caused by the spin zero effect. The positions of these minima suggest that the electron-phonon and electron-electron interactions in this metal are significantly weakened.

PACS numbers  71.18.+y - 72.20.My

Original Russian Text © S.I. Pesotskiĭ, R.B. Lyubovskiĭ, M.V. Kartsovnik, W. Biberacher, N.D. Kushch, A. Kobayashi, B. Zhou, 2009, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 136, No. 4, pp. 771–774.

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