Mode-filtered electron injection into a waveguide interferometer
Mode-filtered electron injection into a waveguide interferometer
复制标题
模式滤波电子注入波导干涉仪
DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
A. Wieck
中科院分区:
文献类型:
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作者:
Sven S. Buchholz;U. Kunze;S. F. Fischer;D. Reuter;A. Wieck
Injection of mode-filtered electrons into a phase-sensitive four-terminal waveguide Aharonov–Bohm (AB) ring is studied. An individually tuneable quantum point contact (QPC) in a waveguide lead of the GaAs/AlGaAs-ring allows to selectively couple to one-dimensional modes in the ring. Thus, we demonstrate single-mode transport in a multimode waveguide structure. Coherent mode-filtering by the lowest QPC subband is verified by nonlocal bend resistance and phase-sensitive AB interference measurements.