2026-04-17T03:02:36Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/104852025-12-05T16:47:46Zcom_2072_1057col_2072_478823col_2072_478917
RECERCAT
author
Barranco Gómez, Manuel
author
Colletti, Leonardo
author
Lipparini, Enrico
author
Emperador, Agustí
author
Pi Pericay, Martí
author
Serra, Llorenç
2009-12-24T10:30:10Z2009-12-24T10:30:10Z2000
We have employed time-dependent local-spin density-functional theory to analyze the multipole spin and charge density excitations in GaAs-AlxGa1-xAs quantum dots. The on-plane transferred momentum degree of freedom has been taken into account, and the wave-vector dependence of the excitations is discussed. In agreement with previous experiments, we have found that the energies of these modes do not depend on the transferred wave vector, although their intensities do. Comparison with a recent resonant Raman scattering experiment [C. Schüller et al., Phys. Rev. Lett. 80, 2673 (1998)] is made. This allows us to identify the angular momentum of several of the observed modes as well as to reproduce their energies
(c) The American Physical Society, 2000 info:eu-repo/semantics/openAccess
Teoria del funcional de densitat
Electrònica quàntica
Semiconductors
Fenòmens mesoscòpics (Física)
Transport d'electrons
Density functional theory
Quantum electronics
Semiconductors
Mesoscopic phenomena (Physics)
Electron transport
Wave-vector dependence of spin and density multipole excitations in quantum dots
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion