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Shot noise in the edge states of 2D topological insulators

Aseev, P. P. and Nagaev, K. E. . (2016) Shot noise in the edge states of 2D topological insulators. Physical Review B, 94 (4). 045425.

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Abstract

We calculate the resistance and shot noise in the edge states of a two-dimensional topological insulator that result from the exchange of electrons between these states and conducting puddles in the bulk of the insulator. The two limiting cases where the energy relaxation is either absent or very strong are considered. A finite time of spin relaxation in the puddles is introduced phenomenologically. Depending on this time and on the strength of coupling between the edge states and the puddles, the Fano factor F=SI/2eI ranges from 0 to 1/3, which is in an agreement with the available experimental data.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretical Nano/Quantum Physics (Klinovaja)
UniBasel Contributors:Aseev, Pavel
Item Type:Article, refereed
Publisher:American Physical Society
ISSN:2469-9950
e-ISSN:2469-9969
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:10 May 2017 10:54
Deposited On:22 Feb 2017 13:40

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