Time-Dependent Modelling of Single-Electron Interferometry with Edge-States

被引：4

作者：

Beggi, A. ^{[1
]}

Bertoni, A. ^{[2
]}

Bordone, P. ^{[1
,2
]}

机构：

[1] Univ Modena & Reggio Emilia, Dipartimento Sci Fis Informat & Matemat, I-41125 Modena, Italy

[2] CNR, Ist Nanosci, S3, I-41125 Modena, Italy

来源：

19TH INTERNATIONAL CONFERENCE ON ELECTRON DYNAMICS IN SEMICONDUCTORS, OPTOELECTRONICS AND NANOSTRUCTURES (EDISON' 19) | 2015年 / 647卷

关键词：

D O I：

10.1088/1742-6596/647/1/012023

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We simulate the time-resolved dynamics of localized electrons in a 2DEG system, where an external magnetic field creates quantum Hall edge states, and properly polarized split gates define a Mach-Zehnder electron interferometer. The carriers travelling inside the Hall channels consist of localized wave packets of edge states: they are propagated numerically by means of a Fourier split-step approach. We find that the energy-dependent scattering process at the quantum point contacts, together with the finite energy distribution of the carriers, have a remarkable effect on the transmission coefficient T of the device. We provide an analytical model to justify the characteristics of T which is in good agreement with the numerical simulations.

引用

页数：4

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