Spin crossover: the quantum phase transition induced by high pressure
A. I. Nesterov, S. G. Ovchinnikov+* 1)
CUCEI, Universidad de Guadalajara, Guadalajara, México
+L.V. Kirensky Institute of Physics, SBRAS, Krasnoyarsk, Russia
*Siberian Federal University, 660062, Krasnoyarsk, Russia
PACS: 03.50.De, 03.65.-w, 05.30.Pr, 11.15.-q, 14.80.Hv
Abstract
The relationship is established between the Berry phase and spin
crossover in condensed matter physics induced by high pressure. It is shown
that the geometric phase has topological origin and can be considered as the
order parameter for such transition.