Nonmagnetic impurity effects on the spin disordered state in NiGa2 S4

Yusuke Nambu, Satoru Nakatsuji, Yoshiteru Maeno

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Nonmagnetic impurity effects on the spin disordered state in the triangular antiferromagnet NiGa2 S4 were studied through magnetic and thermal measurements for Ni1 - x Znx Ga2 S4(0.0 ≤ x ≤ 0.3) . The robust feature of the T2-dependent specific heat and its scaling behavior with the Weiss temperature, for all substitution up to 30%, indicate the existence of a coherent Nambu-Goldstone mode. The absence of either conventional magnetic order or bulk spin freezing suggests a novel symmetry breaking of the ground state.

Original languageEnglish
Pages (from-to)1316-1318
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar 1
Externally publishedYes

Keywords

  • Nambu-Goldstone mode
  • NiGa S
  • Spin disordered state
  • Triangular lattice

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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