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2010 | 118 | 5 | 907-909
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Point Contact Properties of R_3Pd_{20}X_6 (R = La, Ce; X = Si, Ge) Cage Compounds

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Point-contact spectroscopy measurements have been performed on the R_3Pd_{20}X_6 (R = La, Ce; X = Si, Ge) cage compounds. In case of La the characteristic phonon energies have been obtained in agreement with that of the Raman scattering. In Ce_3Pd_{20}Si_6 we have observed asymmetric behaviour of dV/dI(V) dependences which was observed in non-Fermi liquid compound. In Ce_3Pd_{20}Ge_6 we have observed maxima at crystalline electric field energies, influenced by magnetic field. This is connected with quadrupolar ordering transition.
  • Institute of Experimental Physics, Watsonova 47, SK 043 53 Košice, Slovakia
  • Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Johannesburg, South Africa
  • Institute of Experimental Physics, Watsonova 47, SK 043 53 Košice, Slovakia
  • Faculty of Sciences, University of Prešov, 17. novembra 1, SK 080 78 Prešov, Slovakia
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