Towards strongly correlated semimetals: U2Ru2Sn and Eu8Ga16Ge30

S. Paschen, M. Baenitz, V. H. Tran, A. Rabis, F. Steglich, W. Carrillo-Cabrera, Yu Grin, A. M. Strydom, P. de V. du Plessis

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


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 semimetal 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.

Original languageEnglish
Pages (from-to)1183-1188
Number of pages6
JournalJournal of Physics and Chemistry of Solids
Issue number6-8
Publication statusPublished - 2002


  • A. Intermetallic compounds
  • D. Nuclear magnetic resonance (NMR)
  • D. Transport properties

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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