73Ge-NQR study of heavy-fermion compound CeNi2 Ge2

S. Kawasaki, T. Sada, T. Miyoshi, H. Kotegawa, H. Mukuda, Y. Kitaoka, T. C. Kobayashi, T. Fukuhara, K. Maezawa, Kohei M Itoh, E. E. Haller

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Abstract

We report 73Ge-nuclear-quadrupole resonance (NQR) study of heavy-fermion compound CeNi2 Ge2. The temperature dependence of the 73Ge nuclear-spin-lattice-relaxation rate 1 / T1 indicates the development of magnetic correlations and the formation of a Fermi-liquid state at temperatures lower than TFL = 0.4 K, where 1 / T1 T is constant. The 1 / T1 T decrease below TcNQR = 0.1 K, whereas resistance decreases below Tconset = 0.2 K and does not become zero. These results indicate CeNi2 Ge2 closely locates to a superconducting quantum critical point.

Original languageEnglish
Pages (from-to)590-592
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 1
DOIs
Publication statusPublished - 2007 Mar

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Keywords

  • CeNi Ge
  • Heavy fermion
  • NQR

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Kawasaki, S., Sada, T., Miyoshi, T., Kotegawa, H., Mukuda, H., Kitaoka, Y., Kobayashi, T. C., Fukuhara, T., Maezawa, K., Itoh, K. M., & Haller, E. E. (2007). 73Ge-NQR study of heavy-fermion compound CeNi2 Ge2. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 1), 590-592. https://doi.org/10.1016/j.jmmm.2006.10.232