Página Inicial CNEA Laboratorio TANDAR Página Inicial TANDAR Historia del acelerador TANDAR Web interno Web mail
Inicio » Actividades I+D > Publicaciones 2014 > First-Order Insulator-to-Metal Mott Tran...
artículo con referato
"First-Order Insulator-to-Metal Mott Transition in the Paramagnetic 3D System GaTa4Se8"
A. Camjayi, C. Acha, R. Weht, M.G. Rodríguez, B. Corraze, E. Janod, L. Cario and M.J. Rozenberg
Phys. Rev. Lett. 113(8) (2014) 086404/1-5
Abstract
The nature of the Mott transition in the absence of any symmetry breaking remains a matter of debate. We study the correlation-driven insulator-to-metal transition in the prototypical 3D Mott system GaTa4Se8, as a function of temperature and applied pressure. We report novel experiments on single crystals, which demonstrate that the transition is of first order and follows from the coexistence of two states, one insulating and one metallic, that we toggle with a small bias current. We provide support for our findings by contrasting the experimental data with calculations that combine local density approximation with dynamical mean-field theory, which are in very good agreement.
DEPARTAMENTO FISICA DE LA MATERIA CONDENSADA
Contacto
Av. Gral Paz y Constituyentes, San Martín, Pcia. de Buenos Aires, Argentina
Tel: (54-11) 6772-7007 - Fax: (54-11) 6772-7121