NMR Study of a Heavy Fermion Compound YbAs

Kenjiro Hashi, Akira Oyamada, Satoru Maegawa, Takao Goto, Tokushin Ri, Takashi Suzuki

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Nuclear magnetic resonance and relaxation studies on 75As in an Yb-monopnictide YbAs have been carried out at temperatures down to 20mK to clarify the magnetic properties of this compound from a microscopic point of view. A notable result is that the spin-lattice relaxation rate 1/T1 shows Fermi-liquid-like behavior given as (T1T)-1 = 2.9 (sK)-1 below 0.2K. The constant value of (T1T)-1 in YbAs is discussed using the Korringa relation for a single impurity model to compare with those in other heavy Fermion compounds. The NMR spectra between 0.4 K and 0.6 K indicate that the paramagnetic and the antiferromagnetically ordered regions coexist. From these results, it is found that YbAs is a heavy Fermion compound which undergoes an antiferromagnetic transition.

Original languageEnglish
Pages (from-to)4260-4268
Number of pages9
Journaljournal of the physical society of japan
Volume67
Issue number12
DOIs
Publication statusPublished - 1998 Jan 1

Keywords

  • Fermi liquid
  • Heavy-Fermion compounds
  • Korringa relation
  • Low carrier concentration system
  • NMR
  • YbAs

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Hashi, K., Oyamada, A., Maegawa, S., Goto, T., Ri, T., & Suzuki, T. (1998). NMR Study of a Heavy Fermion Compound YbAs. journal of the physical society of japan, 67(12), 4260-4268. https://doi.org/10.1143/JPSJ.67.4260