The particles in the honeycomb lattice with on-site s-wave pairing exhibit many interesting
behaviors, which can be described in the framework of the Hubbard model. Among others …

We have studied the extended Hubbard model with pair hopping in the atomic limit for
arbitrary electron density and chemical potential. The Hamiltonian considered consists of (i) …

In this work, the origin of the highly anisotropic superconducting transition in ZrTe 3, where
the resistance along the a axis, R a, is reduced at 4 K but those along the b axis, R b, and …

In the paper, we study the thermodynamic and electromagnetic properties of the Penson–
Kolb (PK) model, ie, the tight-binding model for fermionic particles with the pair-hopping …

We study the superconducting properties of population-imbalanced ultracold Fermi mixtures
in one-dimensional optical lattices that can be effectively described by the spin-imbalanced …

The recent experimental support for the presence of the Fulde–Ferrell–Larkin–Ovchinnikov
(FFLO) phase in CeCoIn 5 directed attention towards the mechanisms responsible for this …

We have studied the extended Hubbard model with pair hopping in the atomic limit for
arbitrary electron density and chemical potential and focus on paramagnetic effects of the …

We present studies of the atomic limit of the extended Hubbard model with pair hopping for
arbitrary electron density and arbitrary chemical potential. The Hamiltonian consists of (i) the …

We investigate a finite two-dimensional system in the presence of an external magnetic field.
We discuss how the energy spectrum depends on the system size, boundary conditions, and …

The effects of a single non-magnetic impurity on superconducting states in the Penson–Kolb–
Hubbard model have been analyzed. The investigations have been performed within the …