The role of magnetic ions on the magnetotransport properties of the charge-transfer salts beta ''-BEDT-TTF4[(H3O)M(C2O4)(3)]C5H5N where M = Ga3+, Cr3+ or Fe3+

The role of magnetic ions on the magnetotransport properties of the charge-transfer salts beta ''-BEDT-TTF4[(H3O)M(C2O4)(3)]C5H5N where M = Ga3+, Cr3+ or Fe3+

We report high-field magneto transport measurements on beta''- BEDT-TTF4[(H3O)M(C2O4)(3)]C5H5N, where M = Ga3+, Cr3+ or Fe3+. In spite of the differing M ions, these compounds have very similar Fermi surfaces. We observe four distinct Shubnikov-de Haas frequencies, corresponding to four Fe...

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Manylion Llyfryddiaeth
Prif Awduron: Coldea, A, Bangura, A, Singleton, J, Ardavan, A, Akutsu-Sato, A, Akutsu, H, Turner, S, Day, P
Fformat: Conference item
Cyhoeddwyd: 2004
Disgrifiad
Crynodeb:We report high-field magneto transport measurements on beta''- BEDT-TTF4[(H3O)M(C2O4)(3)]C5H5N, where M = Ga3+, Cr3+ or Fe3+. In spite of the differing M ions, these compounds have very similar Fermi surfaces. We observe four distinct Shubnikov-de Haas frequencies, corresponding to four Fermi-surface pockets; the frequencies exhibit the additive relationship expected for a compensated semimetal. The compounds show paramagnetic behaviour and no superconductivity down to 0.5 K, in contrast to other materials of the same family with different solvent molecules. (C) 2003 Elsevier B.V. All rights reserved.

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