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Quilliam, J. A., Bert, F., Manseau, A., Darie, C., Guillot-Deudon, C., Payen, C., Baines, C., Amato, A. & Mendels, P. (2016) Gapless quantum spin liquid ground state in the spin-1 antiferromagnet 6HB-Ba3NiSb2O9. Phys. Rev. B, 93 214432. 
Added by: Richard Baschera (2016-07-22 13:08:31)   Last edited by: Richard Baschera (2016-07-22 13:41:24)
Type de référence: Article
DOI: 10.1103/PhysRevB.93.214432
Numéro d'identification (ISBN etc.): 2469-9950
Clé BibTeX: Quilliam2016
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Catégories: INTERNATIONAL, MIOPS
Mots-clés: lattice antiferromagnet
Créateurs: Amato, Baines, Bert, Darie, Guillot-Deudon, Manseau, Mendels, Payen, Quilliam
Collection: Phys. Rev. B
Consultations : 4/622
Indice de consultation : 1%
Indice de popularité : 0.25%
Résumé     
We present an in-depth study of the magnetic properties of the spin-1 antiferromagnet 6HB-Ba3NiSb2O9. mu SR measurements demonstrate that this material shows no static magnetism down to temperatures as low as 20 mK, making it a likely candidate for a quantum spin liquid state. Sb-121 NMR shift measurements show that the local, intrinsic susceptibility levels off at temperatures below similar to 60 K. The NMR spin-lattice relaxation rate 1/T-1 is essentially constant in temperature and the muon relaxation rate exhibits a low-temperature relaxation plateau, all indications of gapless spin excitations. Our local probe measurements are discussed in the context of several theories proposed for this material.
  
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