TY - JOUR
T1 - Local signatures of electron-electron scattering in an electronic cavity
AU - Gold, Carolin
AU - Bräm, Beat A.
AU - Steinacher, Richard
AU - Krähenmann, Tobias
AU - Hofmann, Andrea
AU - Reichl, Christian
AU - Wegscheider, Werner
AU - Shayegan, Mansour
AU - Ensslin, Klaus
AU - Ihn, Thomas
N1 - Publisher Copyright:
© 2021 authors.
PY - 2021/3/29
Y1 - 2021/3/29
N2 - 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 [Phys. Rev. B 82, 155328 (2010)PRBMDO1098-012110.1103/PhysRevB.82.155328], 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.
AB - 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 [Phys. Rev. B 82, 155328 (2010)PRBMDO1098-012110.1103/PhysRevB.82.155328], 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.
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U2 - 10.1103/PhysRevResearch.3.013287
DO - 10.1103/PhysRevResearch.3.013287
M3 - Article
AN - SCOPUS:85115900439
VL - 3
JO - Physical Review Research
JF - Physical Review Research
SN - 2643-1564
IS - 1
M1 - 013287
ER -