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Ground state of the easy-axis rare-earth kagome langasite Pr3Ga5SiO14.
Zorko, A; Bert, F; Mendels, P; Marty, K; Bordet, P.
Afiliação
  • Zorko A; Laboratoire de Physique des Solides, Université Paris-Sud 11, UMR CNRS 8502, 91405 Orsay, France.
Phys Rev Lett ; 104(5): 057202, 2010 Feb 05.
Article em En | MEDLINE | ID: mdl-20366794
We report muon spin relaxation and {69,71}Ga nuclear quadrupolar resonance local-probe investigations of the kagome compound Pr3Ga5SiO14. Small quasistatic random internal fields develop below 40 K and persist down to our base temperature of 21 mK. They originate from hyperfine-enhanced 141Pr nuclear magnetism which requires a nonmagnetic Pr3+ crystal-field (CF) ground state. In addition, we observe a broad maximum of the relaxation rate at approximately 10 K which we attribute to the population of the first excited magnetic CF level. Our results yield a Van Vleck paramagnet picture, at variance with the formerly proposed spin-liquid ground state.
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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2010 Tipo de documento: Article País de afiliação: França
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Phys Rev Lett Ano de publicação: 2010 Tipo de documento: Article País de afiliação: França