Internal electron-electron interactions in one-dimensional systems detected by Raman spectroscopy
- Institut fuer Angewandte Physik und Zentrum fuer Mikrostrukturforschung, Universitaet Hamburg, Jungiusstrae 11, D-20355 Hamburg (Germany)
- Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrae 1, D-70569 Stuttgart (Germany)
We have investigated experimentally and theoretically electronic Raman excitations in GaAs-Al{sub {ital x}}Ga{sub 1{minus}{ital x}}As quantum wires in magnetic fields. In both the experiments and the calculations we find strong anticrossings of the observed confined magnetoplasmon modes in the vicinity of 2{omega}{sub {ital c}}, where {omega}{sub {ital c}} is the cyclotron-resonance frequency. The observed splittings and anticrossings arise from internal Coulomb interaction in the one-dimensional electron systems and is found to depend sensitively not only on the wave vector but also on the shape of the confining potential and the mode index of the confined plasmon mode. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 397583
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 54, Issue 20; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Condensate pair fluctuations in a two-dimensional [ital d]-wave superconductor and Raman scattering
Possible superconducting mechanism for high T sub c in quasi-one-dimensional multiwire structures