Giant Nernst effect and bipolarity in the quasi-one-dimensional metal, Li(0.9)Mo(6)O(17)

Autor:	Cohn, J. L., White, B. D., Santos, C. A. M. dos, Neumeier, J. J.
Rok vydání:	2012
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Materials Science
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.108.056604
Popis:	The Nernst coefficient for the quasi-one-dimensional metal, Li(0.9)Mo(6)O(17), is found to be among the largest known for metals (~500 microV/KT at T~20K), and is enhanced in a broad range of temperature by orders of magnitude over the value expected from Boltzmann theory for carrier diffusion. A comparatively small Seebeck coefficient implies that Li(0.9)Mo(6)O(17) is bipolar with large, partial Seebeck coefficients of opposite sign. A very large thermomagnetic figure of merit, ZT~0.5, is found at high field in the range T~35-50K. Comment: PRL in press, manuscript(5pp, 3 Fig.'s) and Supplementary Material (5pp, 7 Fig.'s)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1201.2154 Zobrazit plný text záznamu View this record from Arxiv