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

Research output: Contribution to journal › Article

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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Nuclear quadrupole resonance
nuclear quadrupole resonance
Fermions
Fermi liquids
spin-lattice relaxation
nuclear spin
critical point
fermions
temperature dependence
Spin-lattice relaxation
Temperature

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., ... 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

73Ge-NQR study of heavy-fermion compound CeNi2 Ge2. / Kawasaki, S.; Sada, T.; Miyoshi, T.; Kotegawa, H.; Mukuda, H.; Kitaoka, Y.; Kobayashi, T. C.; Fukuhara, T.; Maezawa, K.; Itoh, Kohei M; Haller, E. E.

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 1, 03.2007, p. 590-592.

Research output: Contribution to journal › Article

Kawasaki, S, Sada, T, Miyoshi, T, Kotegawa, H, Mukuda, H, Kitaoka, Y, Kobayashi, TC, Fukuhara, T, Maezawa, K, Itoh, KM & Haller, EE 2007, '73Ge-NQR study of heavy-fermion compound CeNi2 Ge2', Journal of Magnetism and Magnetic Materials, vol. 310, no. 2 SUPPL. PART 1, pp. 590-592. https://doi.org/10.1016/j.jmmm.2006.10.232
Kawasaki S, Sada T, Miyoshi T, Kotegawa H, Mukuda H, Kitaoka Y et al. 73Ge-NQR study of heavy-fermion compound CeNi2 Ge2. Journal of Magnetism and Magnetic Materials. 2007 Mar;310(2 SUPPL. PART 1):590-592. https://doi.org/10.1016/j.jmmm.2006.10.232
Kawasaki, S. ; Sada, T. ; Miyoshi, T. ; Kotegawa, H. ; Mukuda, H. ; Kitaoka, Y. ; Kobayashi, T. C. ; Fukuhara, T. ; Maezawa, K. ; Itoh, Kohei M ; Haller, E. E. / 73Ge-NQR study of heavy-fermion compound CeNi2 Ge2. In: Journal of Magnetism and Magnetic Materials. 2007 ; Vol. 310, No. 2 SUPPL. PART 1. pp. 590-592.
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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.",
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AU - Kawasaki, S.

AU - Sada, T.

AU - Miyoshi, T.

AU - Kotegawa, H.

AU - Mukuda, H.

AU - Kitaoka, Y.

AU - Kobayashi, T. C.

AU - Fukuhara, T.

AU - Maezawa, K.

AU - Itoh, Kohei M

AU - Haller, E. E.

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N2 - 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.

AB - 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.

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KW - Heavy fermion

KW - NQR

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