| Texto completo | |
| Autor(es): |
Mello, Isys F.
[1]
;
Squillante, Lucas
[1]
;
Gomes, Gabriel O.
[2]
;
Seridonio, Antonio C.
[3]
;
de Souza, Mariano
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Sao Paulo State Univ Unesp, IGCE Phys Dept, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Sao Paulo, Dept Astron, BR-05508090 Sao Paulo - Brazil
[3] Sao Paulo State Univ UNESP, Dept Phys & Chem, BR-15385000 Ilha Solteira, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Applied Physics; v. 128, n. 22 DEC 14 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
We explore the coexistence region in the vicinity of the Mott critical end point employing a compressible cell spin- 1 / 2 Ising-like model. We analyze the case for the spin-liquid candidate kappa-(BEDT-TTF) 2Cu 2(CN) 3, where close to the Mott critical end point metallic puddles coexist with an insulating ferroelectric phase. Our results are fourfold: (i) a universal divergent-like behavior of the Gruneisen parameter upon crossing the first-order transition line; (ii) based on scaling arguments, we show that within the coexistence region, for any system close to the critical point, the relaxation-time is entropy-dependent; (iii) we propose the electric Gruneisen parameter Gamma E, which quantifies the electrocaloric effect; and (iv) we identify the metallic/insulating coexistence region as an electronic Griffiths-like phase. Our findings suggest that Gamma E governs the dielectric response close to the critical point and that an electronic Griffiths-like phase emerges in the coexistence region. (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 |