Point Contact Properties of R_3Pd_{20}X_6 (R = La, Ce; X = Si, Ge) Cage Compounds

• Authors: I. Čurlik , A. Strydom , M. Reiffers
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

71.27.+a; 75.30.-m; 75.30.Mb

Discipline

• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 75.30.Mb: Valence fluctuation, Kondo lattice, and heavy-fermion phenomena(see also 71.27.+a Strongly correlated electron systems, heavy fermions; for heavy-fermion superconductors, see 74.70.Tx)
• 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 118
• Issue: 5
• Pages: 907-909

Dates

published

2010-11

Contributors

author

I. Čurlik

• Institute of Experimental Physics, Watsonova 47, SK 043 53 Košice, Slovakia

author

A. Strydom

• Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Johannesburg, South Africa

author

M. Reiffers

• 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

References

• 1. J. Kitagawa, N. Takeda, M. Ishikawa, Phys. Rev. B 53, 5101 (1996)
• 2. T. Goto, Y. Nemoto, T. Yamaguchi, M. Akatsu, T. Yanagisawa, O. Suzuki, H. Kitazawa, Phys. Rev. B 70, 184126 (2004)
• 3. T. Hasegawa, Y. Takasu, T. Kondou, N. Ogita, M. Udagawa, T. Yamaguchi, T. Watanabe, Y. Nemoto, T. Goto, J. Magn. Magn. Mater. 310, 984 (2007)
• 4. M. Reiffers, Fiz. Nizk. Temp. 18, 497 (1992)
• 5. G. Pristáš, M. Reiffers, E. Bauer, A.G.M. Jansen, D.K. Maude, Phys. Rev. B 78, 235108 (2008)
• 6. S. Paschen, M. Müller, J. Custers, M. Kriegisch, A. Prokofiev, G. Hilscher, W. Steiner, A. Pikul, F. Steglich, A.M. Strydom, J. Magn. Magn. Mater. 316, 90 (2007)
• 7. L. Keller, A. Dönni, M. Zolliker, T. Komatsubara, Physica B 259-261, 336 (1999)
• 8. S. Hartmann, A.M. Strydom, N. Oeschler, F. Steglich, SCTE2008, Dresden, to be published
• 9. J. Kitagawa, N. Takeda, M. Ishikawa, T. Yoshida, A. Ishiguro, N. Kimura, T. Komatsubara, Phys. Rev. B 57, 7450 (1998)

Identifiers

DOI

10.12693/APhysPolA.118.907