title: Quantum interference in radial heterostructure nanowires.
abstract: Core/shell heterostructure nanowires are one of the most interesting mesoscopic systems potentially suitable for the study of quantum interference phenomena. Here, we report on experimental observations of both the Aharonov-Bohm (h/e) and the Altshuler-Aronov-Spivak (h/2e) oscillations in radial core/shell (In2O3/InOx) heterostructure nanowires. For a long channel device with a length-to-width ratio of about 33, the magnetoresistance curves at low temperatures exhibited a crossover from low-field h/2e oscillation to high-field h/ e oscillation. The relationship between the oscillation period and the core width was investigated for freestanding or substrate-supported devices and indicated that the current flows dominantly through the core/shell interface.
authors.affiliation: National Creative Research Initiative, Center for Smart Molecular Memory, Electronics and Telecommunication Research Institute, Daejeon 305-700, Korea.
authors.forename: Minkyung
authors.initials: M
authors.lastname: Jung
authors.forename: Joon Sung
authors.initials: JS
authors.lastname: Lee
authors.forename: Woon
authors.initials: W
authors.lastname: Song
authors.forename: Young Heon
authors.initials: YH
authors.lastname: Kim
authors.forename: Sang Don
authors.initials: SD
authors.lastname: Lee
authors.forename: Nam
authors.initials: N
authors.lastname: Kim
authors.forename: Jeunghee
authors.initials: J
authors.lastname: Park
authors.forename: Mahn-Soo
authors.initials: MS
authors.lastname: Choi
authors.forename: Shingo
authors.initials: S
authors.lastname: Katsumoto
authors.forename: Hyoyoung
authors.initials: H
authors.lastname: Lee
authors.forename: Jinhee
authors.initials: J
authors.lastname: Kim