Magnetic field induced lattice effects in a quasi-two-dimensional organic conductor close to the Mott metal-insulator transition
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
30/09/2013
20/05/2014
30/09/2013
20/05/2014
21/08/2012
|
Resumo |
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Processo FAPESP: 11/22050-4 Processo FAPESP: 12/02747-3 We present ultra-high-resolution dilatometric studies in magnetic fields on a quasi-two-dimensional organic conductor kappa-(D8-BEDT-TTF)(2)Cu[N(CN)(2)]Br, which is located close to the Mott metal-insulator (MI) transition. The obtained thermal expansion coefficient, alpha(T), reveals two remarkable features: (i) the Mott MI transition temperature T-MI = (13.6 +/- 0.6) K is insensitive to fields up to 10 T, the highest applied field; (ii) for fields along the interlayer b axis, a magnetic field induced (FI) phase transition at T-FI = (9.5 +/- 0.5) K is observed above a threshold field H-c similar to 1 T, indicative of a spin reorientation with strong magnetoelastic coupling. |
Formato |
5 |
Identificador |
http://dx.doi.org/10.1103/PhysRevB.86.085130 Physical Review B. College Pk: Amer Physical Soc, v. 86, n. 8, p. 5, 2012. 1098-0121 http://hdl.handle.net/11449/25028 10.1103/PhysRevB.86.085130 WOS:000307724800001 WOS000307724800001.pdf |
Idioma(s) |
eng |
Publicador |
Amer Physical Soc |
Relação |
Physical Review B |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |