title: 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.
authors.affiliation: Graduate Institute of Applied Physics, National Taiwan University, Taipei 106, Taiwan.
authors.forename: Shun-Tsung
authors.initials: ST
authors.lastname: Lo
authors.forename: Kuang Yao
authors.initials: KY
authors.lastname: Chen
authors.forename: Sheng-Di
authors.initials: SD
authors.lastname: Lin
authors.forename: J-Y
authors.initials: JY
authors.lastname: Wu
authors.forename: T L
authors.initials: TL
authors.lastname: Lin
authors.forename: M R
authors.initials: MR
authors.lastname: Yeh
authors.forename: T-M
authors.initials: TM
authors.lastname: Chen
authors.forename: C-T
authors.initials: CT
authors.lastname: Liang