刊名:Physica A: Statistical Mechanics and its Applications
出版年:2017
出版时间:15 February 2017
年:2017
卷:468
期:Complete
页码:252-266
全文大小:666 K
卷排序:468
文摘
Hubbard model for dimer (pair cluster) is discussed. The presence of external electric and magnetic field is assumed. Exact diagonalization method is applied within grand canonical ensemble. Chemical potential is studied vs. electron number, external fields and temperature. The discontinuous behaviour of chemical potential is found at low temperatures.