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http://hdl.handle.net/20.500.12188/8003
Наслов: | The angular magnetothermoelectric power of a charge density wave system | Authors: | Krstovska, D Choi, E S Steven, E Brooks, J S |
Issue Date: | 4-јул-2012 | Publisher: | IOP Publishing | Journal: | Journal of physics. Condensed matter : an Institute of Physics journal | Abstract: | The angular dependence of the magnetothermopower of a charge transfer organic salt α-(ET)(2)KHg(SCN)(4) below (4 K) and above (9 K) the phase transition temperature, T(p) = 8 K, and under fields of 15 T and 25 T, below and above the 'kinkfield', has been studied. We find that for a longitudinal thermoelectric measurement both an interlayer thermopower (the Seebeck effect), S(zz), and a transverse thermopower (the Nernst effect), S(yz), exist in all three different B-T phases (the CDW (0), CDW (x) and metallic states) with large amplitude. Both thermoelectric effects display a resonant-like behavior without a sign reversal at the angles corresponding to angular magnetoresistance oscillation minima and maxima in this compound. The resonant behavior is most evident in the CDW(0) state, indicating a mechanism involving the Fermi surface nesting. Angular dependences reveal different behaviors of the thermopower and Nernst effect in the high magnetic field (CDW(x)) state. | URI: | http://hdl.handle.net/20.500.12188/8003 | DOI: | 10.1088/0953-8984/24/26/265502 |
Appears in Collections: | Faculty of Natural Sciences and Mathematics: Journal Articles |
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