Quantum Interference in Radial Heterostructure Nanowires

Jung Minkyung; Sung Lee Joon; Song Woon; Heon Kim Young; Don Lee Sang; Kim Nam; Park Jeunghee; Mahn Soo Choi; Shingo Katsumoto; Lee Hyoyoung; Kim Jinhee

doi:10.1021/nl801506w

Quantum Interference in Radial Heterostructure Nanowires

Jung Minkyung, Sung Lee Joon, Song Woon, Heon Kim Young, Don Lee Sang, Kim Nam, Park Jeunghee, Mahn Soo Choi, Shingo Katsumoto, Lee Hyoyoung, Kim Jinhee

Department of Physics

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

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/InO_x) 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.

Original language	English
Pages (from-to)	3189-3193
Number of pages	5
Journal	Nano Letters
Volume	8
Issue number	10
DOIs	https://doi.org/10.1021/nl801506w
Publication status	Published - 2008 Oct

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl801506w

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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.",

author = "Jung Minkyung and Joon, {Sung Lee} and Song Woon and Young, {Heon Kim} and Sang, {Don Lee} and Kim Nam and Park Jeunghee and Choi, {Mahn Soo} and Shingo Katsumoto and Lee Hyoyoung and Kim Jinhee",

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T1 - Quantum Interference in Radial Heterostructure Nanowires

AU - Minkyung, Jung

AU - Joon, Sung Lee

AU - Woon, Song

AU - Young, Heon Kim

AU - Sang, Don Lee

AU - Nam, Kim

AU - Jeunghee, Park

AU - Choi, Mahn Soo

AU - Katsumoto, Shingo

AU - Hyoyoung, Lee

AU - Jinhee, Kim

PY - 2008/10

Y1 - 2008/10

N2 - 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.

AB - 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.

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Quantum Interference in Radial Heterostructure Nanowires

Abstract

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