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  Towards strongly correlated semimetals: U2Ru2Sn and Eu8Ga16Ge30

Paschen, S., Baenitz, M., Tran, V. H., Rabis, A., Steglich, F., Carrillo-Cabrera, W., et al. (2002). Towards strongly correlated semimetals: U2Ru2Sn and Eu8Ga16Ge30. Journal of Physics and Chemistry of Solids, 63(6-8), 1183-1188. doi:10.1016/S0022-3697(02)00160-9.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-314B-F Version Permalink: http://hdl.handle.net/21.11116/0000-0000-3C86-6
Genre: Journal Article

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 Creators:
Paschen, S.1, Author              
Baenitz, M.2, Author              
Tran, V. H.1, Author              
Rabis, A.1, Author              
Steglich, F.3, Author              
Carrillo-Cabrera, W.4, Author              
Grin, Y.5, Author              
Strydom, A. M.6, Author              
du Plessis, P. D.7, Author
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Michael Baenitz, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863471              
3Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863467              
4Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
5Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              
6Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
7External Organizations, ou_persistent22              

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Free keywords: intermetallic compounds; transport properties; magnetic properties; nuclear magnetic resonance (NMR)
 Abstract: We present results of transport, magnetic, and calorimetric measurements on two f-electron based compounds: U2Ru2Sn and Eu8Ga16Ge30. We show that U2Ru2Sn shares several properties with the strongly correlated sernimetal CeNiSn. These analogies suggest that in U2Ru2Sn a narrow energy gap (or pseudogap) opens which is one order of magnitude larger than the one of CeNiSn. The two modifications of the clathrate Eu8Ga16Ge30 behave as local-moment ferromagnetic metals with relatively low Curie temperatures and small charge-carrier concentrations. The thermal conductivity is low and glass-like, as expected for 'filled-cage' systems. If, by modification of the Ga-Ge cages, a 'Kondo insulating' ground state could be realized, a high thermoelectric figure of merit associated with the (pseudo)gap opening would be expected. (C) 2002 Elsevier Science Ltd. All rights reserved.

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Language(s): eng - English
 Dates: 2002-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: eDoc: 17924
ISI: 000176762300064
DOI: 10.1016/S0022-3697(02)00160-9
 Degree: -

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Title: Journal of Physics and Chemistry of Solids
Source Genre: Journal
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Publ. Info: Oxford : Pergamon
Pages: - Volume / Issue: 63 (6-8) Sequence Number: - Start / End Page: 1183 - 1188 Identifier: ISSN: 0022-3697
CoNE: /journals/resource/110992357322388