Hänel, J., Winkler, H., Ikeda, M., Larrea Jiménez, J. A., Martelli, V., Prokofiev, A., Bauer, E., & Paschen, S. (2014). Anisotropic Thermopower of the Kondo Insulator CeRu₄Sn₆. Journal of Electronic Materials, 43(6), 2440–2443. https://doi.org/10.1007/s11664-014-3139-9
E138-04 - Forschungsbereich Quantum Materials E138-03 - Forschungsbereich Functional and Magnetic Materials
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Journal:
Journal of Electronic Materials
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ISSN:
0361-5235
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Date (published):
2014
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Number of Pages:
4
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Peer reviewed:
Yes
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Keywords:
Electrical and Electronic Engineering; Condensed Matter Physics; Electronic, Optical and Magnetic Materials; Materials Chemistry; Kondo insulator; thermopower; power factor; anisotropic hybridization
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Abstract:
The intermetallic compound CeRu4Sn6 has been tentatively classified as
Kondo insulator. This class of material, especially non-cubic representatives,
is not yet fully understood. Here we report thermopower measurements on
single-crystalline CeRu4Sn6 between 2 K and 650 K, along the main crystallographic
directions. Large positive thermopower is observed in the directions
along which the hybridization is strong and a Kondo insulating gap forms. A
negative contribution to the thermopower dominates for the crystallographic c
axis where hybridization is weak and metallicity prevails.
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Research Areas:
Sustainable Production and Technologies: 20% Special and Engineering Materials: 30% Quantum Many-Body Systems: 50%
