Experimental and theoretical delimitation of the quasi-1D Tomonaga-Luttinger-liquid regime in a spin-1 field-induced antiferromagnet

Autor(es)

Fabrelli, H. ^[1] ; Vieira, A. P. ^[1] ; Paduan-Filho, A. ^[1] ; Freitas, R. S. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Alloys and Compounds; v. 853, FEB 5 2021.
• Citações Web of Science: 0

Resumo

Through a combination of experimental and theoretical techniques, we study the spin-1 field-induced antiferromagnet NiCl2-4SC(NH2)(2), (DTN). Specifically, we use magnetic susceptibility and specific heat measurements, combined with Quantum Monte-Carlo calculations to delimit the quasi-1D Tomonaga-Luttinger-liquid region just above the BEC phase diagram and extend our studies to higher temperatures, where the spin interactions become negligible. This also allows us to verify some discrepancies in the value of the single-ion anisotropy parameter D, which are not well understood yet. (C) 2020 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 17/07248-9 - Dinâmica de cadeias quânticas de spins aperiódicas
• Beneficiário: Andre de Pinho Vieira
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 15/16191-5 - Pesquisas em novos materiais envolvendo campos magnéticos intensos e baixas temperaturas
• Beneficiário: Gennady Gusev
• Modalidade de apoio: Auxílio à Pesquisa - Temático