Magnetic oscillations amplitude of a dirty quasi two-dimensional organic metal

Magnetoresistance of dirty crystals of the organic metal (BEDO) 5Ni(CN) 4·3C 2H 4(OH) 2 (where BEDO stands for the bis(ethylenedioxy)tetrathiafulvalene molecule) has been measured up to 54 T at liquid helium temperatures. Quantum oscillations are clearly observed in a large field range even though a...

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Bibliographic Details
Published in:Synthetic metals 2008-12, Vol.158 (21), p.973-976
Main Authors: Vignolles, David, Audouard, Alain, Laukhin, Vladimir N., Nardone, Marc, Canadell, Enric, Spitsina, Nataliya G., Yagubskii, Eduard B.
Format: Article
Language:English
Subjects:
Fermi surface
High magnetic fields
Organic metals
Quantum oscillations
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Summary:Magnetoresistance of dirty crystals of the organic metal (BEDO) 5Ni(CN) 4·3C 2H 4(OH) 2 (where BEDO stands for the bis(ethylenedioxy)tetrathiafulvalene molecule) has been measured up to 54 T at liquid helium temperatures. Quantum oscillations are clearly observed in a large field range even though a Dingle temperature as high as about 13 K is deduced from the field dependence of the oscillations amplitude. This value corresponds to scattering time as low as τ D ∼ 0.1 ps, leading to ω c τ D values (where ω c is the cyclotron pulsation) smaller than 1. Possible origins of the observed low scattering time value are discussed.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2008.06.026