Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe
We report high-field magnetotransport measurements on β″-(BEDT- TTF)4[(H3O)M(C2O4) 3]· solvent, where M=Ga3+, Cr3+ and Fe3+ and solvent=C5H5N. In spite of their differing transition metal-ions, M, the three compounds exhibit similar magnetic quantum oscillation spectra superimposed on a positive mag...
| Main Authors: | , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2004
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| _version_ | 1797055068773548032 |
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| author | Coldea, A Bangura, A Ardavan, A Singleton, J Akutsu-Sato, A Akutsu, H Turner, S Day, P |
| author_facet | Coldea, A Bangura, A Ardavan, A Singleton, J Akutsu-Sato, A Akutsu, H Turner, S Day, P |
| author_sort | Coldea, A |
| collection | OXFORD |
| description | We report high-field magnetotransport measurements on β″-(BEDT- TTF)4[(H3O)M(C2O4) 3]· solvent, where M=Ga3+, Cr3+ and Fe3+ and solvent=C5H5N. In spite of their differing transition metal-ions, M, the three compounds exhibit similar magnetic quantum oscillation spectra superimposed on a positive magnetoresistance. At least four independent quantum oscillation frequencies have been identified, corresponding to two different hole and electron pockets of the Fermi surface which follow the rules of a compensated metal. Observation of the small pockets could be the result of the Fermi surface reconstruction induced by a possible density wave. The effective masses are very similar for different samples and for different pockets range between meff ≈ 0.5-1.1 me whereas the Dingle temperatures varies between TD ≈ 1.4-4 K. At low temperature, the longitudinal magnetoresistance violates Kohler's rule, suggesting that the interlayer transport in these quasi-2D systems cannot be related to a single scattering time and that the disorder plays an important role. © EDP Sciences. |
| first_indexed | 2024-03-06T19:06:11Z |
| format | Journal article |
| id | oxford-uuid:153778a5-84e9-498f-87ab-9e6033cd216a |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:06:11Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:153778a5-84e9-498f-87ab-9e6033cd216a2022-03-26T10:24:12ZFermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and FeJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:153778a5-84e9-498f-87ab-9e6033cd216aEnglishSymplectic Elements at Oxford2004Coldea, ABangura, AArdavan, ASingleton, JAkutsu-Sato, AAkutsu, HTurner, SDay, PWe report high-field magnetotransport measurements on β″-(BEDT- TTF)4[(H3O)M(C2O4) 3]· solvent, where M=Ga3+, Cr3+ and Fe3+ and solvent=C5H5N. In spite of their differing transition metal-ions, M, the three compounds exhibit similar magnetic quantum oscillation spectra superimposed on a positive magnetoresistance. At least four independent quantum oscillation frequencies have been identified, corresponding to two different hole and electron pockets of the Fermi surface which follow the rules of a compensated metal. Observation of the small pockets could be the result of the Fermi surface reconstruction induced by a possible density wave. The effective masses are very similar for different samples and for different pockets range between meff ≈ 0.5-1.1 me whereas the Dingle temperatures varies between TD ≈ 1.4-4 K. At low temperature, the longitudinal magnetoresistance violates Kohler's rule, suggesting that the interlayer transport in these quasi-2D systems cannot be related to a single scattering time and that the disorder plays an important role. © EDP Sciences. |
| spellingShingle | Coldea, A Bangura, A Ardavan, A Singleton, J Akutsu-Sato, A Akutsu, H Turner, S Day, P Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe |
| title | Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe |
| title_full | Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe |
| title_fullStr | Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe |
| title_full_unstemmed | Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe |
| title_short | Fermiology of new charge-transfer salts, β″-(BEDT-TTF) 4[(H3O)M(C2O4)3]-solvent where M = Ga, Cr and Fe |
| title_sort | fermiology of new charge transfer salts β bedt ttf 4 h3o m c2o4 3 solvent where m ga cr and fe |
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