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Controllable disorder in a hybrid nanoelectronic system: realization of a superconducting diode.

ABSTRACT: We have studied a hybrid nanoelectronic system which consists of an AlGaAs/GaAs two-dimensional electron gas (2DEG) in close proximity (~70?nm) to an Al superconducting nanofilm. By tuning the current through the Al film, we can change the conductance of the 2DEG and furthermore vary the effective disorder in the Al superconducting film in a controllable way. When a high current is injected into the film, screening which couples the Al film and the 2DEG results in a collapse of anti-symmetric behavior in the current-voltage characteristics, V(I) ~ -V(-I), which holds true in a conventional superconductor. Our results may open a new avenue of experimentally realizing a superconducting diode.

SUBMITTER: Lo ST

PROVIDER: S-EPMC3721077 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Controllable disorder in a hybrid nanoelectronic system: realization of a superconducting diode.

Lo Shun-Tsung ST Chen Kuang Yao KY Lin Sheng-Di SD Wu J-Y JY Lin T L TL Yeh M R MR Chen T-M TM Liang C-T CT

Scientific reports 20130101

We have studied a hybrid nanoelectronic system which consists of an AlGaAs/GaAs two-dimensional electron gas (2DEG) in close proximity (~70 nm) to an Al superconducting nanofilm. By tuning the current through the Al film, we can change the conductance of the 2DEG and furthermore vary the effective disorder in the Al superconducting film in a controllable way. When a high current is injected into the film, screening which couples the Al film and the 2DEG results in a collapse of anti-symmetric be ...[more]

PMID: 23881449

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