Enhancement of relaxation rates in the normal state of superconductor PuRhGa5:NQR relaxation study

H. Sakai, S. Kambe, Y. Tokunaga, T. Fujimoto, R. E. Walstedt, H. Yasuoka, D. Aoki, Y. Homma, E. Yamamoto, A. Nakamura, Y. Shiokawa, K. Nakajima, Y. Arai, T. D. Matsuda, Y. Haga, Y. Onuki

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2 Citations (Scopus)

Abstract

The spin-lattice relaxation rates (1 / T1) have been measured under zero field using nuclear quadrupole resonance (NQR) lines in superconductor PuRhGa5 and Pauli-paramagnet LuCoGa5. In the reference LuCoGa5 with fully-occupied 4f shell, the 1 / T1 shows the constant behavior of (T1 T)- 1 = 0.495 ± 0.002(s K)- 1 . On the other hand, in PuRhGa5, 1 / T1 is much larger than in LuCoGa5 and the 1 / T1 ∝ T behavior below ∼ 30 K is seen, where its (T1 T)- 1 value is 3.27 ± 0.005(s K)- 1 . These results suggest a development of coherent Fermi liquid state incorporated with 5f electrons below ∼ 30 K in PuRhGa5.

Original languageEnglish
Pages (from-to)e118-e119
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 1
DOIs
Publication statusPublished - 2007 Mar 1

Keywords

  • NQR
  • PuRhGa
  • Relaxation rates

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Sakai, H., Kambe, S., Tokunaga, Y., Fujimoto, T., Walstedt, R. E., Yasuoka, H., Aoki, D., Homma, Y., Yamamoto, E., Nakamura, A., Shiokawa, Y., Nakajima, K., Arai, Y., Matsuda, T. D., Haga, Y., & Onuki, Y. (2007). Enhancement of relaxation rates in the normal state of superconductor PuRhGa5:NQR relaxation study. Journal of Magnetism and Magnetic Materials, 310(2 SUPPL. PART 1), e118-e119. https://doi.org/10.1016/j.jmmm.2006.10.881