Publications (11)
Exciton-phonon droplets with Bose-Einstein condensate: transport and optical properties
D. Roubtsov, Y. Lepine, I. Loutsenko
We discuss the possibility for a moving droplet of excitons and phonons to form a coherent state inside the packet. We describe such an inhomogeneous state in terms of Bose-Einstei…
Ab initio analysis of electron-phonon coupling in molecular devices
N. Sergueev, D. Roubtsov, Hong Guo
We report first principles analysis of electron-phonon coupling in molecular devices under external bias voltage and during current flow. Our theory and computational framework are…
Bose-Einstein Condensation of Excitons: Reply to Tikhodeev's Criticism
I. Loutsenko, D. Roubtsov
The extended version of our reply to Comment on ``Critical Velocities in Exciton Superfluidity'' by S. G. Tikhodeev (Phys. Rev. Lett., 84 (2000), 3502 or from http://prl.aps.org/)…
On Reduction of Critical Velocity in a Model of Superfluid Bose-gas with Boundary Interactions
D. Roubtsov, Y. Lepine
The existence of superfluidity in a 3D Bose-gas can depend on boundary interactions with channel walls. We study a simple model where the dilute moving Bose-gas interacts with the…
On Bose-Einstein condensate inside moving exciton-phonon droplets
D. Roubtsov, Y. Lepine, I. Loutsenko
We explore a nonlinear field model to describe the interplay between the ability of excitons to be Bose condensed and their interaction with other modes of a crystal. We apply our…
Bosons in a Lattice: Exciton-Phonon Condensate in Cu2O
D. Roubtsov, Y. Lepine
We explore a nonlinear field model to describe the interplay between the ability of excitons to be Bose-condensed and their interaction with other modes of a crystal. We apply our…
ENDF/B-VIII.1: Updated Nuclear Reaction Data Library for Science and Applications
G. P. A. Nobre, R. Capote, M. T. Pigni +106
The ENDF/B-VIII.1 library is the newest recommended evaluated nuclear data file by the Cross Section Evaluation Working Group (CSEWG) for use in nuclear science and technology appl…
Moving Stationary State of Exciton-Phonon Condensate in Cu2O
D. Roubtsov, Y. Lepine
We explore a simple theoretical model to describe the properties of Bose condensed para-excitons in Cu2O. Taking into account the exciton-phonon interaction and introducing a coher…
On Critical Velocities in Exciton Superfluidity
I. Loutsenko, D. Roubtsov
The presence of exciton phonon interactions is shown to play a key role in the exciton superfluidity. We apply the Landau criterion for an exciton-phonon condensate moving uniforml…
Ab initio calculation of transport properties of metal-C60-metal junctions
N. Sergueev, D. Roubtsov, H. Guo
By carrying out density functional theory (DFT) analysis within the Keldysh non-equilibrium Green's function (NEGF) framework, we investigate the quantum transport properties of Au…
Asymmetric shape and dynamic stability of exciton-phonon solitons moving in a periodic medium
D. Roubtsov, Y. Lepine, E. N. Onder
Solitons are known to move ballistically through a medium without changement of their shape. In practice, the shape of moving inhomogeneous states changes, and a long lasting tail…