Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1812288 | Physica B: Condensed Matter | 2011 | 5 Pages |
Abstract
Within the framework of exact linear response theory, we derive a general formula, with which the dynamic conductance of mesoscopic system can be determined in the absence of Coulomb interaction. In addition, we present a solution to the problem of current partition in the system. These allow the derivation of dynamic conductance in time-dependent case. As a natural consequence, the current (charge) conservation and gauge invariance conditions are fulfilled. To give an example, we discuss the dynamic conductance of a ballistic quantum wire, and the effect of contacts on the conductance is also discussed.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Jun Quan, Ying Tian, Jun Zhang, Le Xi Shao,