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Threshold singularities in the dynamic response of gapless integrable models
V. V. Cheianov, M. Pustilnik
We develop a method of an asymptotically exact treatment of threshold singularities in dynamic response functions of gapless integrable models. The method utilizes the integrabilit…
Spin dynamics in a one-dimensional ferromagnetic Bose gas
M. B. Zvonarev, V. V. Cheianov, T. Giamarchi
We investigate the propagation of spin excitations in a one-dimensional (1D) ferromagnetic Bose gas. While the spectrum of longitudinal spin waves in this system is sound-like, the…
Random resistor network model of minimal conductivity in graphene
V. V. Cheianov, V. I. Falko, B. L. Altshuler +1
Transport in undoped graphene is related to percolating current patterns in the networks of {\em N-} and {\em P}-type regions reflecting the strong bipolar charge density fluctuati…
Veselago Lens for Electrons: Focusing and Caustics in Graphene p-n Junctions
Vadim V. Cheianov, Vladimir Fal'ko, B. L. Altshuler
The focusing of electric current by a single \textit{p-n} junction in graphene is predicted. We show that precise focusing can be achieved by fine-tuning the densities of carriers…