Faculté des sciences

Superconductivity in the Repulsive Hubbard Model

Baeriswyl, Dionys

In: Journal of Superconductivity and Novel Magnetism, 2011, vol. 24, no. 3, p. 1157-1159

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... Plus

Ajouter à la liste personnelle
    Summary
    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 improvement thereof.