3 papers
cond-mat.other2006
Point-like spin-dependent interaction in calculations of self-energy ladder diagrams
I. A. Nechaev, I. Nagy, P. M. Echenique +1
An instantaneous and zero-range spin-dependent interaction, derived by summing an infinite number of electron-hole ladder diagrams within a local approximation, is analyzed as a fu…
cond-mat.mtrl-sci2006
Bound states in two-dimensional shielded potentials
I. Nagy, M. J. Puska, N. Zabala
We study numerically the existence and character of bound states for positive and negative point charges shielded by the response of a two-dimensional homogeneous electron gas. The…
cond-mat.mes-hall2004
Nonlinear screening and stopping power in two-dimensional electron gases
E. Zaremba, I. Nagy, P. M. Echenique
We have used density functional theory to study the nonlinear screening properties of a two-dimensional (2D) electron gas. In particular, we consider the screening of an external s…