Effects of intersubband coupling on Friedel oscillations in quasi-two-dimensional electron systems |
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| Institution: | 1. Department of Theoretical Chemistry, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany;2. National Institute of Standards and Technology, Gaithersburg, MD, United States;3. Department of Physics, Khallikote College, Brahmapur, Odisha State, India |
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| Abstract: | We have studied the effect of screening on an ionized impurity and Freidel oscillations in a quasi-two-dimensional (Q2D) electron system in which multisubbands are occupied. The screening effects of the Q2D electron gas are investigated within the random-phase approximation. We show that in a quantum well in which two subbands are occupied, the intersubband coupling significantly deepens the first minimum in the Friedel oscillation. |
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