Year: 1996
Type: article
Abstract: We show that the collective excitation spectrum of electrons with 1/${\mathit{r}}^{2}$ interaction in a parabolic quantum dot of frequency ${\mathrm{\ensuremath{\omega}}}_{0}$ contains a ``breathing'' mode of frequency 2\ensuremath{\Omega}, where ${\mathrm{\ensuremath{\Omega}}}^{2}$\ensuremath{\equiv}${\mathrm{\ensuremath{\omega}}}_{0}^{2}$+1/4${\mathrm{\ensuremath{\omega}}}_{\mathit{c}}^{2}$ and ${\mathrm{\ensuremath{\omega}}}_{\mathit{c}}$ is the cyclotron frequency, a result first obtained by Johnson and Quiroga [Phys. Rev. Lett. 74, 4277 (1995)]. \textcopyright{} 1996 The American Physical Society.
Authors: Michael R. Geller, Giovanni Vignale
Institution: University of Missouri
Language: Latvian
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2017114175