Local signatures of electron-electron scattering in an electronic cavity

被引：0

作者：

Gold, Carolin ^{[1
]}

Braem, Beat A. ^{[1
]}

Steinacher, Richard ^{[1
]}

Kraehenmann, Tobias ^{[1
]}

Hofmann, Andrea ^{[1
]}

Reichl, Christian ^{[1
]}

Wegscheider, Werner ^{[1
]}

Shayegan, Mansour ^{[2
]}

Ensslin, Klaus ^{[1
]}

Ihn, Thomas ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Lab Solid State Phys, CH-8093 Zurich, Switzerland

[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW RESEARCH | 2021年 / 3卷 / 01期

基金：

美国国家科学基金会; 瑞士国家科学基金会;

关键词：

BRANCHED FLOW; TRANSPORT;

D O I：

10.1103/PhysRevResearch.3.013287

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We image equilibrium and nonequilibrium transport through a two-dimensional electronic cavity using scanning gate microscopy. Injecting electrons into the cavity through a quantum point contact close to equilibrium, we raster scan a weakly invasive tip above the cavity region and measure the modulated conductance through the cavity. Varying the electron injection energy between +/- 2meV, we observe that conductance minima turn into maxima beyond an energy threshold of +/- 0.6meV. This observation bears similarity to previous measurements by Jura et al. [Phys. Rev. B 82, 155328 (2010)], who used a strongly invasive tip potential to study electron injection into an open two-dimensional electron gas. This resemblance suggests a similar microscopic origin based on electron-electron interactions.

引用

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