Electronic and magnetic spectra in the t-J model on the honeycomb lattice
Семинары
Теория конденсированных сред — семинар «Статистическая механика»
Дата и время: вторник, 26 июня 2018 г., в 16:00
Место: Конференц-зал им. Блохинцева (4-й этаж), Лаборатория теоретической физики им. Н.Н. Боголюбова
Тема семинара: «Electronic and magnetic spectra in the t-J model on the honeycomb lattice»
Докладчик: Н.М. Плакида (ЛТФ ОИЯИ)
Аннотация:
A spin-rotation-invariant Green-function theory for the antiferromagnetic t-J Heisenberg model on the two-dimensional honeycomb lattice is formulated. Employing a generalized mean-field approximation for arbitrary temperatures and hole dopings, the electronic and spin-excitation spectra and thermodynamic quantities (two-spin correlation functions, staggered magnetization, magnitic susceptibility, correlation length) are calculated by solving a coupled system of self-consistency equations for the correlation functions.