Hubbard-I approximation as a tool for study of superconducting properties of the Hubbard model with repulsive interaction
نویسندگان
چکیده
منابع مشابه
Superconductivity in the Repulsive Hubbard Model
The two-dimensional repulsive Hubbard model has been investigated by a variety of methods, from small to large U . Superconductivity with d-wave symmetry is consistently found close to half filling. After a brief review of the various methods a variational many-electron state is discussed in more detail. This trial state is a natural extension of the Gutzwiller ansatz and provides a substantial...
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ژورنال
عنوان ژورنال: Physica C: Superconductivity and its Applications
سال: 2010
ISSN: 0921-4534
DOI: 10.1016/j.physc.2009.11.144