Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1864863 | Physics Letters A | 2006 | 5 Pages |
Abstract
We present a theoretical description for electron transport through an Aharonov-Bohm ring with a quantum dot side-coupled to one arm. An analytic formula of conductance is derived which shows the Aharonov-Bohm oscillations. The quantum dot modulates electron transmission through the coupled arm, and thus affects the amplitude of the AB oscillations. Tuning the plunger gate of the quantum dot can induce the antiresonance, in which the transmission through the coupled arm is quenched and the Aharonov-Bohm oscillations are suppressed completely. The temperature-dependence of the suppression of the Aharonov-Bohm oscillations is discussed.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Zhou-Bo He, Yong-Jian Xiong,