Elastocaloric-effect-induced adiabatic magnetization in paramagnetic salts due to the mutual interactions

Autor(es)

Squillante, Lucas ^[1] ; Mello, Isys F. ^[1] ; Seridonio, Antonio C. ^[2] ; de Souza, Mariano ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, IGCE Phys Dept, BR-13506900 Rio Claro, SP - Brazil

^[2] Sao Paulo State Univ UNESP, Dept Phys & Chem, BR-15385000 Ilha Solteira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 11, n. 1 MAY 3 2021.
• Citações Web of Science: 0

Resumo

The temperature change under adiabatic stress, i.e., the elastocaloric effect, is a well-understood phenomenon and of particular interest due to its potential application in alternative ways for refrigeration. Here, we demonstrate that in the regime of low-temperatures (a few mK) real paramagnets can be magnetized when compressed adiabatically without applied magnetic field. Such adiabatic magnetization is a genuine many-body problem, stemming from the inherent dipolar mutual interactions between adjacent magnetic moments. We showcase experimental setups to carry out adiabatic magnetization and thus to access such a subtle effect. Perspectives of further investigations by controlling the mutual interactions in Bose-Einstein condensates in magnetic insulators and dipolar spin-ice systems via the adiabatic increase of temperature are also presented. Yet, we discuss the connection between the elastic Gruneisen parameter and the shift on the critical temperature of second-order phase transitions under adiabatic stress, as well as its connection with the Ehrenfest relation. (AU)

• Processo FAPESP: 11/22050-4 - Investigação das propriedades termodinâmicas e de transporte de sistemas eletrônicos fortemente correlacionados
• Beneficiário: Valdeci Pereira Mariano de Souza
• Modalidade de apoio: Auxílio à Pesquisa - Regular