Locally induced quantum interference in scanning gate experiments

A. A. Kozikov; R. Steinacher; C. Rössler; T. Ihn; K. Ensslin; C. Reichl; W. Wegscheider

doi:10.1088/1367-2630/16/5/053031

Locally induced quantum interference in scanning gate experiments

Mesoscale and Nanoscale Physics 2016-10-31 v1

Authors: A. A. Kozikov , R. Steinacher , C. Rössler , T. Ihn , K. Ensslin , C. Reichl , W. Wegscheider

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Abstract

We present conductance measurements of a ballistic circular stadium influenced by a scanning gate. When the tip depletes the electron gas below, we observe very pronounced and regular fringes covering the entire stadium. The fringes correspond to transmitted modes in constrictions formed between the tip-induced potential and the boundaries of the stadium. Moving the tip and counting the fringes gives us exquisite control over the transmission of these constrictions. We use this control to form a quantum ring with a specific number of modes in each arm showing the Aharonov-Bohm effect in low-field magnetoconductance measurements.

Keywords

aharonov-bohm effect quantum hall effect atomic and molecular interactions

Cite

@article{arxiv.1401.2370,
  title  = {Locally induced quantum interference in scanning gate experiments},
  author = {A. A. Kozikov and R. Steinacher and C. Rössler and T. Ihn and K. Ensslin and C. Reichl and W. Wegscheider},
  journal= {arXiv preprint arXiv:1401.2370},
  year   = {2016}
}

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10 pages, 4 figures

Locally induced quantum interference in scanning gate experiments

Abstract

Keywords

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