Volume 58, Number 3, May 2002
|Page(s)||442 - 447|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 August 2002|
Gadolinium trihydride —A new magnetoresistive semiconductor
Department of Materials Physics, Royal Institute of Technology
100 44, Stockholm, Sweden
2 Department of Materials Science, The ngström Laboratory, Uppsala University P.O. Box 534, 751 21 Uppsala, Sweden
3 Department of Solid State Physics, Royal Institute of Technology 100 44, Stockholm, Sweden
Accepted: 14 February 2002
Large negative magnetoresistance and magnetisation anomalies are found in epitaxial GdH films. The zero-field semiconductor-like behavior in the resistivity is completely suppressed at a magnetic field of . Temperature and field dependence of the magnetisation supports short-range ordering in the paramagnetic host, mediated by the vacancy state of trihydride.
PACS: 75.50.Pp – Magnetic semiconductors / 75.30.Vn – Colossal magnetoresistance / 72.20.Ee – Mobility edges; hopping transport
© EDP Sciences, 2002
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