TY - JOUR
KW - paper
AU - Stefan Albrecht
AU - Lucia Reining
AU - Rodolfo Del Sole
AU - G Onida
AB - A method for the inclusion of self-energy and excitonic effects in first-principles calculations of absorption spectra, within the state-of-the-art plane-wave pseudopotential approach, is presented. Self-energy effects are computed within GW, and the electron-hole interaction is treated solving an effective two-particles equation which is derived from the relevant Bethe-Salpeter equation. The link between the GW approach and the inclusion of excitonic effects is discussed. We illustrate the performance of the approach at the examples of the absorption spectrum of bulk silicon and the excited state charge density of Na-4.
BT - Phys. Stat. Sol. A
CY - MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY
DA - DEC 16
M1 - 2
N1 - 5th Epioptics Workshop, ERICE, ITALY, JUN 17-22, 1998
N2 - A method for the inclusion of self-energy and excitonic effects in first-principles calculations of absorption spectra, within the state-of-the-art plane-wave pseudopotential approach, is presented. Self-energy effects are computed within GW, and the electron-hole interaction is treated solving an effective two-particles equation which is derived from the relevant Bethe-Salpeter equation. The link between the GW approach and the inclusion of excitonic effects is discussed. We illustrate the performance of the approach at the examples of the absorption spectrum of bulk silicon and the excited state charge density of Na-4.
PB - Ettore Majorana Fdn; Ctr Sci Culture
PP - MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY
PY - 1998
SP - 189
EP - 197
T2 - Phys. Stat. Sol. A
TI - Excitonic effects in the optical properties
VL - 170
ER -