Annotation
This study deals with phase transitions in magnetic systems when spin fluctuations and electronphonon interaction exchange enhancement occur. It is shown that in this context fluctuations play a substantial role and determine the character of the first-order phase transition that is close to a second-order transition.
Received: 2010 June 9
Approved: 2011 April 13
PACS:
73.43.Nq Quantum phase transitions
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
O.G. Karchev, A.M. Savchenko
Department of Quantum Statistics and Field Theory, Faculty of Physics, Moscow State University, Moscow, 119991, Russia
Department of Quantum Statistics and Field Theory, Faculty of Physics, Moscow State University, Moscow, 119991, Russia