Chowdhury, Sheelan Sengupta ; Deo, P. Singha ; Jayannavar, A. M. ; Manninen, M. (2010) S-matrix formulation of mesoscopic systems and evanescent modes Journal of Physics: Condensed Matter, 22 (1). 015601_1-015601_6. ISSN 0953-8984
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Official URL: http://iopscience.iop.org/0953-8984/22/1/015601
Related URL: http://dx.doi.org/10.1088/0953-8984/22/1/015601
Abstract
Validity of the Landauer-Buttiker formalism for studying linear transport in mesoscopic systems is well established theoretically as well as experimentally. Akkermans et al (1991 Phys. Rev. Lett. 66 76) have shown that the formalism can be extended to study thermodynamic properties like persistent currents. This extension was verified for simple one-dimensional systems. We study the applicability of Akkermans et al' s formula for quasi-one-dimensional systems with several conducting channels. In the case that all modes are propagating the formula is still valid but in the case of evanescent modes it requires reinterpretation.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics Publishing. |
| ID Code: | 14815 |
| Deposited On: | 12 Nov 2010 13:33 |
| Last Modified: | 03 Jun 2011 10:13 |
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