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http://hdl.handle.net/2289/2653
Title: | Geometric phase for a dimerized disordered continuum: Topological shot noise |
Authors: | Pradhan, P. Kumar, N. |
Issue Date: | Oct-1998 |
Publisher: | IOP Publishing Ltd. |
Citation: | Europhysics Letters, 1998, Vol.44, p131-136 |
Abstract: | Geometric phase shift associated with an electron propagating through a dimerized disordered continuum is shown to be 0, or ±π (modulo 2π), according to whether the associated circuit traversed in the two-dimensional parameter space excludes, or encircles a certain singularity. This phase shift is a topological invariant. Its discontinuous dependence on the electron energy and disorder implies a statistical spectral and conductance fluctuation in a corresponding mesoscopic system. Inasmuch as the fluctuation derives from the discreteness of the phase shift, it may aptly be called a topological shot noise. |
Description: | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations) |
URI: | http://hdl.handle.net/2289/2653 |
ISSN: | 0295-5075 1286-4854 (Online) |
Alternative Location: | http://arxiv.org/abs/cond-mat/9712175 http://dx.doi.org/10.1209/epl/i1998-00446-x |
Copyright: | 1998 IOP Publishing Ltd. |
Appears in Collections: | Research Papers (TP) |
Files in This Item:
File | Description | Size | Format | |
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1998 EL44 p131.pdf Restricted Access | Restricted Access | 245.89 kB | Adobe PDF | View/Open Request a copy |
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