Now showing items 11-20 of 194
Many-body effects in a two-component, one-dimensional electron gas with repulsive, short-range interactions
We investigate the correlation effects in a two-component, one-dimensional electron gas interacting via repulsive δ function interactions. Electron correlations are treated within the approximation scheme of Singwi, Tosi, ...
Effect of weak disorder on the BCS-BEC crossover in a two-dimensional Fermi gas
(World Scientific Publishing Co. Pte Ltd, 2017)
In this paper, we study the two-dimensional (2D) ultracold Fermi gas with weak impurity in the framework of mean-field theory where the impurity is introduced through Gaussian fluctuations. We have investigated the role ...
Disorder Induced BCS-BEC Crossover in an Ultracold Fermi Gas
We develop the formalism for BCS-BEC crossover in the presence of weak random impurity and calculate the effect of the random potentials on the basic mean-field quantities. The disorder has been included through the Nozieres ...
Ground-state properties of the two-dimensional charged Bose gas
(American Physical Society, 2001-03-01)
We study the two-dimensional gas of charged bosons interacting via a logarithmic potential within the quantal hypernetted-chain approximation. The pair correlation function, the static structure factor, the groundstate ...
Unpinning of heavy hole spin in magnetic quantum dots
(Wiley-VCH Verlag, 2017)
Using the k · p theory and configuration interaction method, we analyze the effect of heavy hole–light hole (HH–LH) mixing in CdTe quantum dots (QDs) with a single manganese (Mn) ion. We find that the hole-Mn exchange ...
Investigating dirty crossover through fidelity suscepribility and density of states
(World Scientific Publishing, 2014)
We investigate the BCS-BEC crossover in an ultracold atomic gas in the presence of disorder. The disorder is incorporated in the mean-field formalism through Gaussian fluctuations. We observe evolution to an asymmetric ...
Hard-core Yukawa model for two-dimensional charge-stabilized colloids
(American Physical Society, 2001-10)
The hypernetted chain and Percus-Yevick approximations are used to study the phase diagram of a simple hard-core Yukawa model of charge-stabilized colloidal particles in a two-dimensional system. We calculate the static ...
Band-gap renormalization in quasi-one-dimensional systems
(Kluwer Academic Publishers, 1997)
Non-equilibrium transport and spin dynamics insingle-molecule magnets.
(Academic Press, 2015)
The time-dependent transport through single-molecule magnets (SMM) coupled to mag-netic or non-magnetic electrodes is studied in the framework of the generalized Masterequation (GME) method. We calculate the transient ...
Plasmon-LO-phonon coupling effects on the drag rate in double quantum-well systems
We study the Coulomb drag rate for electrons in a double-quantum-well structure taking into account the electron-optical phonon interactions. The full wave vector and frequency dependent random-phase approximation (RPA) ...