Aharonov-Bohm effect in many-electron quantum rings
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||6|
|Journal||Physical Review B|
|Publication status||Published - 17 Jun 2010|
|Publication type||A1 Journal article-refereed|
The Aharonov-Bohm effect is investigated in two-dimensional, single-terminal quantum rings in magnetic fields by using time-dependent density-functional theory. We find multiple transport loops leading to the oscillation periods of h/(en), where n is the number of loops. We show that the Aharonov-Bohm oscillations are relatively weakly affected by the electron-electron interactions, whereas the ring width has a strong effect on the characteristics of the oscillations. Our results propose that in those experimental semiconductor quantum-ring devices that show clear Aharonov-Bohm oscillations the electron current is dominated by a few states along narrow conduction channels.
- DENSITY-FUNCTIONAL THEORY, NORMAL-METAL RINGS, ELECTROMAGNETIC POTENTIALS, OSCILLATIONS, CONDUCTANCE, OCTOPUS, TOOL