5 papers
Various ordered states in a 2D interacting electron system close to an electronic topological transition
F. Bouis, M. N. Kiselev, F. Onufrieva +1
We consider a 2D electron system on a square lattice with hopping beyond nearest neighbors. The existence of the quantum critical point associated with an electronic topological tr…
Comment on "Theory of Unconventional Spin Density Wave: A Possible Mechanism of the Micromagnetism in U-based Heavy Fermion Compounds"
M. Kiselev, F. Bouis
In the recent letter [1] by H. Ikeda and Y. Ohashi, a new, very attractive idea is proposed for the explanation of the micromagnetism in U-based heavy fermion compounds. For this s…
Effective action for the Kondo lattice model. New approach for S=1/2
F. Bouis, M. N. Kiselev
In the partition function of the Kondo lattice, spin matrices are exactly replaced by bilinear combinations of Fermi operators with the purely imaginary chemical potential lambda=-…
The Kondo-Hubbard model at half-filling
J. Perez-Conde, F. Bouis, P. Pfeuty
We have analyzed the antiferromagnetic (J>0) Kondo-Hubbard lattice with the band at half-filling by means of a perturbative approach in the strong coupling limit, the small paramet…
Some aspects of electronic topological transition in 2D system on a square lattice. Excitonic ordered states
M. Kiselev, F. Bouis, F. Onufrieva +1
We study the ordered "excitonic" states which develop around the quantum critical point (QCP) associated with the electronic topological transition (ETT) in a 2D electron system on…