Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities

Fratus, Keith R.; Le Calonnec, Camille; Jalabert, Rodolfo; Weick, Guillaume; Weinmann, Dietmar

doi:10.21468/SciPostPhys.10.3.069

SciPost Physics

Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities

Keith R. Fratus, Camille Le Calonnec, Rodolfo A. Jalabert, Guillaume Weick, Dietmar Weinmann

SciPost Phys. 10, 069 (2021) · published 17 March 2021

doi: 10.21468/SciPostPhys.10.3.069
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Abstract

We demonstrate the emergence of classical features in electronic quantum transport for the scanning gate microscopy response in a cavity defined by a quantum point contact and a micron-sized circular reflector. The branches in electronic flow characteristic of a quantum point contact opening on a two-dimensional electron gas with weak disorder are folded by the reflector, yielding a complex spatial pattern. Considering the deflection of classical trajectories by the scanning gate tip allows to establish simple relationships of the scanning pattern, which are in agreement with recent experimental findings.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.10.3.069
TI  - Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities
PY  - 2021/03/17
UR  - https://scipost.org/SciPostPhys.10.3.069
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 10
IS  - 3
SP  - 069
A1  - Fratus, Keith R.
AU  - Le Calonnec, Camille
AU  - Jalabert, Rodolfo
AU  - Weick, Guillaume
AU  - Weinmann, Dietmar
AB  - We demonstrate the emergence of classical features in electronic quantum transport for the scanning gate microscopy response in a cavity defined by a quantum point contact and a micron-sized circular reflector. The branches in electronic flow characteristic of a quantum point contact opening on a two-dimensional electron gas with weak disorder are folded by the reflector, yielding a complex spatial pattern. Considering the deflection of classical trajectories by the scanning gate tip allows to establish simple relationships of the scanning pattern, which are in agreement with recent experimental findings.
ER  -

@Article{10.21468/SciPostPhys.10.3.069,
	title={{Signatures of folded branches in the scanning gate microscopy of ballistic electronic cavities}},
	author={Keith R. Fratus and Camille Le Calonnec and Rodolfo A. Jalabert and Guillaume Weick and Dietmar Weinmann},
	journal={SciPost Phys.},
	volume={10},
	pages={069},
	year={2021},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.10.3.069},
	url={https://scipost.org/10.21468/SciPostPhys.10.3.069},
}

Cited by 4

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¹ ² ³ ⁴ Keith R. Fratus,
¹ ² ³ ⁵ Camille Le Calonnec,
¹ ² ³ Rodolfo Jalabert,
¹ ² ³ Guillaume Weick,
¹ ² ³ Dietmar Weinmann

Funder for the research work leading to this publication

Agence Nationale de la Recherche [ANR]