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  Giant Isotropic Nernst Effect in an Anisotropic Kondo Semimetal

Stockert, U., Sun, P., Oeschler, N., Steglich, F., Takabatake, T., Coleman, P., et al. (2016). Giant Isotropic Nernst Effect in an Anisotropic Kondo Semimetal. Physical Review Letters, 117(21): 216401, pp. 1-5. doi:10.1103/PhysRevLett.117.216401.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-5284-D Version Permalink: http://hdl.handle.net/21.11116/0000-0001-58D4-D
Genre: Journal Article

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 Creators:
Stockert, Ulrike1, Author              
Sun, Peijie2, Author              
Oeschler, Niels2, Author              
Steglich, Frank3, Author              
Takabatake, Toshiro4, Author
Coleman, Piers4, Author
Paschen, Silke4, Author
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              
4External Organizations, ou_persistent22              

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 Abstract: The "failed Kondo insulator" CeNiSn has long been suspected to be a nodal metal, with a node in the hybridization matrix elements. Here we carry out a series of Nernst effect experiments to delineate whether the severely anisotropic magnetotransport coefficients do indeed derive from a nodal metal or can simply be explained by a highly anisotropic Fermi surface. Our experiments reveal that despite an almost twentyfold anisotropy in the Hall conductivity, the large Nernst signal is isotropic. Taken in conjunction with the magnetotransport anisotropy, these results provide strong support for an isotropic Fermi surface with a large anisotropy in quasiparticle mass derived from a nodal hybridization.

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Language(s): eng - English
 Dates: 2016-11-142016-11-14
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 117 (21) Sequence Number: 216401 Start / End Page: 1 - 5 Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1