Giant Nernst effect in CeCoIn5 -: art. no. 217002
Giant Nernst effect in CeCoIn5 -: art. no. 217002
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DOI:
10.1103/physrevlett.92.217002
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发表时间:
2004-05-28
影响因子:
8.6
通讯作者:
Onuki, Y
中科院分区:
文献类型:
--
作者:
Bel, R;Behnia, K;Onuki, Y
We present a study of Nernst and Seebeck coefficients of the heavy-fermion superconductor CeCoIn5. Below 18 K, concomitant with a field-dependent Seebeck coefficient, a large sublinear Nernst signal emerges with a magnitude drastically exceeding what is expected for a multiband Fermi-liquid metal. In the mixed state, in contrast with all other superconductors studied before, this signal overwhelms the one associated with the motion of superconducting vortices. The results point to a hitherto unknown source of transverse thermoelectricity in strongly interacting electrons.