Exact diagonalization study of 2D Hubbard model on honeycomb lattice: Semi-metal to insulator transition
نویسندگان
چکیده
منابع مشابه
The 2D Hubbard model on the honeycomb lattice
We consider the 2D Hubbard model on the honeycomb lattice, as a model for a single layer graphene sheet in the presence of screened Coulomb interactions. At half filling and weak enough coupling, we compute the free energy, the ground state energy and we construct the correlation functions up to zero temperature in terms of convergent series; analiticity is proved by making use of constructive ...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 2011
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2011.07.019