90 citations · 292 across the 8 of their papers we have counts for
8 papers
Anisotropy in the dielectric function of BiTe from first principles: From the UV-visible to the infrared range
R. Busselez, A. Levchuk, P. Ruello +2
The dielectric properties of BiTe, a layered compound crystallizing in a rhombohedral structure, are investigated by means of first-principles calculations at the random ph…
Direct observation of electron thermalization and electron-phonon coupling in photoexcited bismuth
J. Faure, J. Mauchain, E. Papalazarou +7
We investigate the ultrafast response of the bismuth (111) surface by means of time resolved photoemission spectroscopy. The direct visualization of the electronic structure allows…
Observation of large multiple scattering effects in ultrafast electron diffraction on single crystal silicon
I. Gonzalez Vallejo, G. Gallé, B. Arnaud +8
We report on ultrafast electron diffraction on high quality single crystal silicon. The ultrafast dynamics of the Bragg peaks exhibits a giant photo-induced response which can only…
Anisotropic thermal expansion of bismuth from first principles
B. Arnaud, S. Lebègue, G. Raffy
Some anisotropy in both mechanical and thermodynamical properties of bismuth is expected. A combination of density functional theory total energy calculations and density functiona…
Mean-field solution of the Hubbard model: the magnetic phase diagram
Yann Claveau, Brice Arnaud, Sergio Di Matteo
The present paper is based on our graduate lectures in condensed-matter physics. We found that the mean-field solution of the Hubbard model is an excellent tool to stimulate studen…
Electron cooling and Debye-Waller effect in photoexcited bismuth
B. Arnaud, Y. Giret
By means of first principles calculations, we computed the effective electron-phonon coupling constant governing the electron cooling in photoexcited bismuth. strongly…
Coherent Phonon Coupling to Individual Bloch States in Photoexcited Bismuth
E. Papalazarou, J. Faure, J. Mauchain +8
We investigate the temporal evolution of the electronic states at the bismuth (111) surface by means of time and angle resolved photoelectron spectroscopy. The binding energy of bu…
Entropy driven atomic motion in laser-excited bismuth
Y. Giret, A. Gellé, B. Arnaud
We introduce a thermodynamical model based on the two-temperature approach in order to fully understand the dynamics of the coherent A phonon in laser-excited bismuth. Using…