Direct imaging of electron transport within a quantum point contact

C. R. Da Cunha; N. Aoki; R. Akis; D. K. Ferry; Y. Ochiai

doi:10.1109/NANO.2005.1500640

Direct imaging of electron transport within a quantum point contact

C. R. Da Cunha, N. Aoki, R. Akis, D. K. Ferry, Y. Ochiai

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Much attention has been given to sub-1G₀ (=2e²/h) features in the transmission curve of a quantum point contact (e.g.: 0.5G ₀, 0.7G₀). Explanations for this phenomenon have been attributed to many-body interactions such as the Kondo effect or the formation of spin polarized currents. We have used scanning gate microscopy to directly observe the local features of the transport associated with sub-1G₀ structures. Images taken with this technique reveal striking features such as weak localization induced within the constriction as well as the formation of self-consistent potentials in the QPC.

Original language	English (US)
Title of host publication	2005 5th IEEE Conference on Nanotechnology
Publisher	IEEE Computer Society
Pages	754-757
Number of pages	4
ISBN (Print)	0780391993, 9780780391994
DOIs	https://doi.org/10.1109/NANO.2005.1500640
State	Published - 2005
Event	2005 5th IEEE Conference on Nanotechnology - Nagoya, Japan Duration: Jul 11 2005 → Jul 15 2005

Publication series

Name	2005 5th IEEE Conference on Nanotechnology
Volume	2

Other

Other	2005 5th IEEE Conference on Nanotechnology
Country/Territory	Japan
City	Nagoya
Period	7/11/05 → 7/15/05

Keywords

Nanotechnology
Quantum point contacts
SPM
Scanning gate microscopy

ASJC Scopus subject areas

General Engineering

Access to Document

10.1109/NANO.2005.1500640

Cite this

Da Cunha, CR, Aoki, N, Akis, R, Ferry, DK & Ochiai, Y 2005, Direct imaging of electron transport within a quantum point contact. in 2005 5th IEEE Conference on Nanotechnology., 1500640, 2005 5th IEEE Conference on Nanotechnology, vol. 2, IEEE Computer Society, pp. 754-757, 2005 5th IEEE Conference on Nanotechnology, Nagoya, Japan, 7/11/05. https://doi.org/10.1109/NANO.2005.1500640

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title = "Direct imaging of electron transport within a quantum point contact",

abstract = "Much attention has been given to sub-1G0 (=2e2/h) features in the transmission curve of a quantum point contact (e.g.: 0.5G 0, 0.7G0). Explanations for this phenomenon have been attributed to many-body interactions such as the Kondo effect or the formation of spin polarized currents. We have used scanning gate microscopy to directly observe the local features of the transport associated with sub-1G0 structures. Images taken with this technique reveal striking features such as weak localization induced within the constriction as well as the formation of self-consistent potentials in the QPC.",

keywords = "Nanotechnology, Quantum point contacts, SPM, Scanning gate microscopy",

author = "{Da Cunha}, {C. R.} and N. Aoki and R. Akis and Ferry, {D. K.} and Y. Ochiai",

year = "2005",

doi = "10.1109/NANO.2005.1500640",

language = "English (US)",

isbn = "0780391993",

series = "2005 5th IEEE Conference on Nanotechnology",

publisher = "IEEE Computer Society",

pages = "754--757",

booktitle = "2005 5th IEEE Conference on Nanotechnology",

note = "2005 5th IEEE Conference on Nanotechnology ; Conference date: 11-07-2005 Through 15-07-2005",

}

TY - GEN

T1 - Direct imaging of electron transport within a quantum point contact

AU - Da Cunha, C. R.

AU - Aoki, N.

AU - Akis, R.

AU - Ferry, D. K.

AU - Ochiai, Y.

PY - 2005

Y1 - 2005

N2 - Much attention has been given to sub-1G0 (=2e2/h) features in the transmission curve of a quantum point contact (e.g.: 0.5G 0, 0.7G0). Explanations for this phenomenon have been attributed to many-body interactions such as the Kondo effect or the formation of spin polarized currents. We have used scanning gate microscopy to directly observe the local features of the transport associated with sub-1G0 structures. Images taken with this technique reveal striking features such as weak localization induced within the constriction as well as the formation of self-consistent potentials in the QPC.

AB - Much attention has been given to sub-1G0 (=2e2/h) features in the transmission curve of a quantum point contact (e.g.: 0.5G 0, 0.7G0). Explanations for this phenomenon have been attributed to many-body interactions such as the Kondo effect or the formation of spin polarized currents. We have used scanning gate microscopy to directly observe the local features of the transport associated with sub-1G0 structures. Images taken with this technique reveal striking features such as weak localization induced within the constriction as well as the formation of self-consistent potentials in the QPC.

KW - Nanotechnology

KW - Quantum point contacts

KW - SPM

KW - Scanning gate microscopy

UR - http://www.scopus.com/inward/record.url?scp=33746926772&partnerID=8YFLogxK

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U2 - 10.1109/NANO.2005.1500640

DO - 10.1109/NANO.2005.1500640

M3 - Conference contribution

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SN - 0780391993

SN - 9780780391994

T3 - 2005 5th IEEE Conference on Nanotechnology

SP - 754

EP - 757

BT - 2005 5th IEEE Conference on Nanotechnology

PB - IEEE Computer Society

T2 - 2005 5th IEEE Conference on Nanotechnology

Y2 - 11 July 2005 through 15 July 2005

ER -

Direct imaging of electron transport within a quantum point contact

Abstract

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Keywords

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