Interaction of static charges in graphene within Monte Carlo simulationстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 июня 2014 г.
Аннотация:The study of the interaction potential between static charges within Monte Carlo simulation of graphene is carried out. The numerical simulations are performed in the effective lattice field theory with noncompact (3+1)-dimensional Abelian lattice gauge fields and (2+1)-dimensional staggered lattice fermions. It is shown that for all considered temperatures the interaction can be well described by the Debye screened potential created by two-dimensional electron-hole excitations. At low temperatures Debye mass mD plays a role of order parameter of the insulator-semimetal phase transition. In the semimetal phase at high temperature graphene effective field theory reveals the properties of weakly interacting two-dimensional plasma of fermion excitations.