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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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Paschen, S.1, Autor           
Baenitz, M.2, Autor           
Tran, V. H.1, Autor           
Rabis, A.1, Autor           
Steglich, F.3, Autor           
Carrillo-Cabrera, W.4, Autor           
Grin, Y.5, Autor           
Strydom, A. M.6, Autor           
du Plessis, P. D.7, Autor
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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Schlagwörter: intermetallic compounds; transport properties; magnetic properties; nuclear magnetic resonance (NMR)
 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2002-06
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 17924
ISI: 000176762300064
DOI: 10.1016/S0022-3697(02)00160-9
 Art des Abschluß: -

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Titel: Journal of Physics and Chemistry of Solids
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Oxford : Pergamon
Seiten: - Band / Heft: 63 (6-8) Artikelnummer: - Start- / Endseite: 1183 - 1188 Identifikator: ISSN: 0022-3697
CoNE: https://pure.mpg.de/cone/journals/resource/110992357322388