TY - JOUR
KW - paper
AU - Fabien Bruneval
AU - N Vast
AU - Lucia Reining
AU - M. Izquierdo
AU - Fausto Sirotti
AU - N. Barrett
AB - State-of-the-art theoretical methods fail in describing the optical absorption spectrum, band gap, and optical onset of Cu2O. We have extended a recently proposed self-consistent quasiparticle approach, based on the GW approximation, to the calculation of optical spectra, including excitonic effects. The band structure compares favorably with our present angle-resolved photoemission measurements. The excitonic effects based on these realistic band structure and screening provide a reliable optical absorption spectrum, which allows for a revised interpretation of its main structures.
BT - Phys. Rev. Lett.
CY - ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
DA - DEC 31
DO - 10.1103/PhysRevLett.97.267601
M1 - 26
N2 - State-of-the-art theoretical methods fail in describing the optical absorption spectrum, band gap, and optical onset of Cu2O. We have extended a recently proposed self-consistent quasiparticle approach, based on the GW approximation, to the calculation of optical spectra, including excitonic effects. The band structure compares favorably with our present angle-resolved photoemission measurements. The excitonic effects based on these realistic band structure and screening provide a reliable optical absorption spectrum, which allows for a revised interpretation of its main structures.
PB - AMERICAN PHYSICAL SOC
PP - ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
PY - 2006
EP - 267601
T2 - Phys. Rev. Lett.
TI - Exchange and correlation effects in electronic excitations of Cu2O
UR - http://dx.doi.org/10.1103/PhysRevLett.97.267601
VL - 97
ER -