Anomalous magnetic-field-hysteresis of quantum oscillations in κ-(BETS)2FeBr4.

Authors :: Konoike, T.
Uji, S.
Terashima, T.
Nishimura, M.
Yamaguchi, T.
Enomoto, K.
Fujiwara, H.
Zhang, B.
Kobayashi, H.
Source :: Journal of Low Temperature Physics; Feb2006, Vol. 142 Issue 3/4, p527-530, 4p
Publication Year :: 2006
Abstract: Shubnikov-de Haas (SdH) oscillations are measured in the organic conductor, κ-(BETS)<subscript>2</subscript>FeBr<subscript>4</subscript>. In the canted antiferromagnetic (CAF) phase (μ<subscript>0</subscript>H<μ<subscript>0</subscript>H<subscript>c</subscript>=5.2 T), hysteresis is clearly observed in both the background resistance and oscillation amplitude. The analyses of the Dingle temperatures in the CAF phase show that some disorder is induced in the down sweep from the field above H<subscript>c</subscript>. A possible origin of the excess scattering is discussed. [ABSTRACT FROM AUTHOR]