22 citations · 59 across the 6 of their papers we have counts for
9 papers
Many-body effects in TiSe2: Can GW describe an Excitonic Insulator?
M. Cazzaniga, H. Cercellier, M. Holzmann +4
We present both theoretical ab initio GW and experimental angle-resolved photoemission (ARPES) and scanning tunneling (STS) spectroscopy results on TiSe2. With respect to the densi…
Elementary structural building blocks encountered in silicon surface reconstructions
Corsin Battaglia, Katalin Gaal-Nagy, Claude Monney +5
Driven by the reduction of dangling bonds and the minimization of surface stress, reconstruction of silicon surfaces leads to a striking diversity of outcomes. Despite this variety…
A new structural model for the Si(331)-(12x1) reconstruction
Corsin Battaglia, Katalin Gaal-Nagy, Claude Monney +5
A new structural model for the Si(331)-(12x1) reconstruction is proposed. Based on scanning tunneling microscopy images of unprecedented resolution, low-energy electron diffraction…
Ab-initio self-energy corrections in systems with metallic screening
Marco Cazzaniga, Nicola Manini, Luca Guido Molinari +1
The calculation of self-energy corrections to the electron bands of a metal requires the evaluation of the intraband contribution to the polarizability in the small-q limit. When n…
Ab-initio calculation of the vibrational modes of SiH4, H2SiO, Si10H16, and Si10H14O
Katalin Gaal-Nagy, Giulia Canevari, Giovanni Onida
We have studied the normal modes of hydrogenated and oxidized silicon nanocrystals, namely SiH4 (silan), H2SiO (silanon), Si10H16 and Si10H14O. The small clusters (SiH4 and H2SiO)…
Ab-initio calculations of the optical properties of the Si(113)3x2ADI surface
Katalin Gaal-Nagy, Giovanni Onida
We investigated the stable silicon (113) surface with a 3x2ADI reconstruction by ab-initio methods. The ground state properties have been obtained using the density-functional theo…