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5 papers · 2 filters
Disorder Induced Ferromagnetism in Restricted Geometries
E. Eisenberg, R. Berkovits
We study the influence of on-site disorder on the magnetic properties of the ground state of the infinite Hubbard model. We find that for one dimensional systems disorder has n…
Statistics of energy spectra of a strongly disordered system of interacting electrons
R. Berkovits, B. I. Shklovskii
Statistics of many particle energy levels of a finite two-dimensional system of interacting electrons is numerically studied. It is shown that the statistics of these levels underg…
Plastic flow of persistent currents in two dimensional strongly interacting systems
Richard Berkovits, Yshai Avishai
The local persistent current in two dimensional strongly interacting systems is investigated. As the interaction strength is enhanced the current in the sample undergoes a transiti…
Spin and interaction effects on charge distribution and currents in one-dimensional conductors and rings within the Hartree-Fock approximation
Avraham Cohen, Klaus Richter, Richard Berkovits
Using the self--consistent Hartree-Fock approximation for electrons with spin at zero temperature, we study the effect of the electronic interactions on the charge distribution in…
Absence of bimodal peak spacing distribution in the Coulomb blockade regime
Richard Berkovits
Using exact diagonalization numerical methods, as well as analytical arguments, we show that for the typical electron densities in chaotic and disordered dots the peak spacing dist…