Trajectory transition due to gate depletion in corrugation gated quantum wires

Yuichi Ochiai; A. Wahju Widjaja; Nobuyuki Sasaki; Kazunuki Yamamoto; Kohji Ishibashi; Jonathan P. Bird; Yoshinobu Aoyagi; Takuo Sugano; David K. Ferry

doi:10.1143/jjap.36.1746

Trajectory transition due to gate depletion in corrugation gated quantum wires

Yuichi Ochiai, A. Wahju Widjaja, Nobuyuki Sasaki, Kazunuki Yamamoto, Kohji Ishibashi, Jonathan P. Bird, Yoshinobu Aoyagi, Takuo Sugano, David K. Ferry

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

3 Scopus citations

Abstract

We studied quantum interference effects observed in the low-temperature magnetoresistance of corrugation gated wires on a two-dimensional electron gas system. We have also studied the transport change due to deep gate depletion by means of the controlling gate voltage. We analyzed the gate voltage and magnetic field dependences of the negative magnetoresistance and observed small oscillations in the low-field magnetoresistances. The results show that a boundary-related or geometrical effect should strongly affect the phase-breaking mechanism in corrugation gated wires, and that the electron wave propagation differs between a narrow wire and a dot array, depending on the gate voltage.

Original language	English (US)
Pages (from-to)	1746-1748
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	36
Issue number	3 SUPPL. B
DOIs	https://doi.org/10.1143/jjap.36.1746
State	Published - Mar 1997

Keywords

AB oscillations
Conductance fluctuations
Corrugation gated wires
GaAs/AlGaAs heterojunction
Split-gated quantum wires

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/jjap.36.1746

Cite this

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title = "Trajectory transition due to gate depletion in corrugation gated quantum wires",

abstract = "We studied quantum interference effects observed in the low-temperature magnetoresistance of corrugation gated wires on a two-dimensional electron gas system. We have also studied the transport change due to deep gate depletion by means of the controlling gate voltage. We analyzed the gate voltage and magnetic field dependences of the negative magnetoresistance and observed small oscillations in the low-field magnetoresistances. The results show that a boundary-related or geometrical effect should strongly affect the phase-breaking mechanism in corrugation gated wires, and that the electron wave propagation differs between a narrow wire and a dot array, depending on the gate voltage.",

keywords = "AB oscillations, Conductance fluctuations, Corrugation gated wires, GaAs/AlGaAs heterojunction, Split-gated quantum wires",

author = "Yuichi Ochiai and Widjaja, {A. Wahju} and Nobuyuki Sasaki and Kazunuki Yamamoto and Kohji Ishibashi and Bird, {Jonathan P.} and Yoshinobu Aoyagi and Takuo Sugano and Ferry, {David K.}",

year = "1997",

month = mar,

doi = "10.1143/jjap.36.1746",

language = "English (US)",

volume = "36",

pages = "1746--1748",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "3 SUPPL. B",

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TY - JOUR

T1 - Trajectory transition due to gate depletion in corrugation gated quantum wires

AU - Ochiai, Yuichi

AU - Widjaja, A. Wahju

AU - Sasaki, Nobuyuki

AU - Yamamoto, Kazunuki

AU - Ishibashi, Kohji

AU - Bird, Jonathan P.

AU - Aoyagi, Yoshinobu

AU - Sugano, Takuo

AU - Ferry, David K.

PY - 1997/3

Y1 - 1997/3

N2 - We studied quantum interference effects observed in the low-temperature magnetoresistance of corrugation gated wires on a two-dimensional electron gas system. We have also studied the transport change due to deep gate depletion by means of the controlling gate voltage. We analyzed the gate voltage and magnetic field dependences of the negative magnetoresistance and observed small oscillations in the low-field magnetoresistances. The results show that a boundary-related or geometrical effect should strongly affect the phase-breaking mechanism in corrugation gated wires, and that the electron wave propagation differs between a narrow wire and a dot array, depending on the gate voltage.

AB - We studied quantum interference effects observed in the low-temperature magnetoresistance of corrugation gated wires on a two-dimensional electron gas system. We have also studied the transport change due to deep gate depletion by means of the controlling gate voltage. We analyzed the gate voltage and magnetic field dependences of the negative magnetoresistance and observed small oscillations in the low-field magnetoresistances. The results show that a boundary-related or geometrical effect should strongly affect the phase-breaking mechanism in corrugation gated wires, and that the electron wave propagation differs between a narrow wire and a dot array, depending on the gate voltage.

KW - AB oscillations

KW - Conductance fluctuations

KW - Corrugation gated wires

KW - GaAs/AlGaAs heterojunction

KW - Split-gated quantum wires

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AN - SCOPUS:0347915594

SN - 0021-4922

VL - 36

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EP - 1748

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

IS - 3 SUPPL. B

ER -

Trajectory transition due to gate depletion in corrugation gated quantum wires

Abstract

Keywords

ASJC Scopus subject areas

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