Kukushkin, I. V. and Smet, J. H. and Mikhailov, Sergey A. and Kulakovskii, D. V. and Klitzing, Klaus von and Wegscheider, Werner
Observation of Retardation Effects in the Spectrum of Two-Dimensional Plasmons.
Physical Review Letters (PRL) 90 (15), p. 156801.
Retardation effects, theoretically predicted more than 35 years ago, are observed in the spectrum of two-dimensional plasmons in high-electron-mobility GaAs/AlGaAs quantum wells. In zero magnetic field, a strong reduction of the resonant plasma frequency is observed due to the hybridization of the plasma and light modes. In a perpendicular magnetic field B, hybrid cyclotron-plasmon modes appear with a very unusual dependence of the frequency on B field. Experimental results are in excellent agreement with the theory.
|Date:||18 April 2003|
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Keywords:||gallium arsenide, aluminium compounds, III-V semiconductors, semiconductor heterojunctions, two-dimensional electron gas, quantum Hall effect, semiconductor quantum dots, membranes |
|Subjects:||500 Science > 530 Physics|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||14 Dec 2009 13:16|
|Last Modified:||20 Jul 2011 22:11|