Giant Nernst effect in a Kondo lattice close to a quantum critical point

R. Bel; K. Behnia; Y. Nakajima; K. Izawa; Y. Matsuda; H. Shishido; R. Settai; Y. Onuki

doi:10.1103/PhysRevLett.92.217002

Giant Nernst effect in a Kondo lattice close to a quantum critical point

Strongly Correlated Electrons 2009-09-29 v1 Superconductivity

Authors: R. Bel , K. Behnia , Y. Nakajima , K. Izawa , Y. Matsuda , H. Shishido , R. Settai , Y. Onuki

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Abstract

We present a study of Nernst and Seebeck coefficients of the heavy-fermion superconductor CeCoIn $_{5}$ . Below 18 K, concomitant with a field-dependent Seebeck coefficient, a large sub-linear Nernst signal emerges with a magnitude drastically exceeding what is expected for a multi-band 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.

Keywords

Nernst effect Kondo lattice quantum critical point heavy fermion superconductor transverse thermoelectricity

Cite

@article{arxiv.cond-mat/0311473,
  title  = {Giant Nernst effect in a Kondo lattice close to a quantum critical point},
  author = {R. Bel and K. Behnia and Y. Nakajima and K. Izawa and Y. Matsuda and H. Shishido and R. Settai and Y. Onuki},
  journal= {arXiv preprint arXiv:cond-mat/0311473},
  year   = {2009}
}

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5 pages including 3 figures

Giant Nernst effect in a Kondo lattice close to a quantum critical point

Abstract

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