Phase breaking of coherent electron waves in dot array systems

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

doi:10.1143/jjap.36.3971

Phase breaking of coherent electron waves in dot array systems

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

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3 Scopus citations

Abstract

Low temperature magneto-conductance has been studied in ballistic dot arrays using corrugation splitgates. We have obseved many peaks at low fields superimposed upon the large negative magneto-resistance in double sided corrugation wires. These peaks can be considered to arise from three different phase breaking phenomena for coherent electron waves in ballistic quantum dots: weak localization in the quasi-ballistic regime, periodic oscillations due to coherent interferences and electron focusing of collimated electron waves. The three phenomena have been discussed in terms of their phase breaking behavior in dot arrays.

Original language	English (US)
Pages (from-to)	3971-3973
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	36
Issue number	6 B
DOIs	https://doi.org/10.1143/jjap.36.3971
State	Published - 1997

Keywords

Coherent interference
Collimated electron wave
Double-sided corrugation gate
GaAs/AlGaAs heterojunction
split-gated quantum wires

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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10.1143/jjap.36.3971

Cite this

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title = "Phase breaking of coherent electron waves in dot array systems",

abstract = "Low temperature magneto-conductance has been studied in ballistic dot arrays using corrugation splitgates. We have obseved many peaks at low fields superimposed upon the large negative magneto-resistance in double sided corrugation wires. These peaks can be considered to arise from three different phase breaking phenomena for coherent electron waves in ballistic quantum dots: weak localization in the quasi-ballistic regime, periodic oscillations due to coherent interferences and electron focusing of collimated electron waves. The three phenomena have been discussed in terms of their phase breaking behavior in dot arrays.",

keywords = "Coherent interference, Collimated electron wave, Double-sided corrugation gate, GaAs/AlGaAs heterojunction, split-gated quantum wires",

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

year = "1997",

doi = "10.1143/jjap.36.3971",

language = "English (US)",

volume = "36",

pages = "3971--3973",

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

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "6 B",

}

TY - JOUR

T1 - Phase breaking of coherent electron waves in dot array systems

AU - Ochiai, Yuichi

AU - Widjaja, A. Wahju

AU - Sasaki, Nobuyuki

AU - Yamamoto, Kazunuki

AU - Bird, Jonathan P.

AU - Ishibashi, Kohji

AU - Aoyagi, Yoshinobu

AU - Sugano, Takuo

AU - Ferry, David K.

PY - 1997

Y1 - 1997

N2 - Low temperature magneto-conductance has been studied in ballistic dot arrays using corrugation splitgates. We have obseved many peaks at low fields superimposed upon the large negative magneto-resistance in double sided corrugation wires. These peaks can be considered to arise from three different phase breaking phenomena for coherent electron waves in ballistic quantum dots: weak localization in the quasi-ballistic regime, periodic oscillations due to coherent interferences and electron focusing of collimated electron waves. The three phenomena have been discussed in terms of their phase breaking behavior in dot arrays.

AB - Low temperature magneto-conductance has been studied in ballistic dot arrays using corrugation splitgates. We have obseved many peaks at low fields superimposed upon the large negative magneto-resistance in double sided corrugation wires. These peaks can be considered to arise from three different phase breaking phenomena for coherent electron waves in ballistic quantum dots: weak localization in the quasi-ballistic regime, periodic oscillations due to coherent interferences and electron focusing of collimated electron waves. The three phenomena have been discussed in terms of their phase breaking behavior in dot arrays.

KW - Coherent interference

KW - Collimated electron wave

KW - Double-sided corrugation gate

KW - GaAs/AlGaAs heterojunction

KW - split-gated quantum wires

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SN - 0021-4922

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

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

IS - 6 B

ER -

Phase breaking of coherent electron waves in dot array systems

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