Landau-level depopulation and high-field magneto-resistance of open quantum dots

R. Akis; A. Ramamoorthy; J. P. Bird; T. Maemoto; D. K. Ferry; M. Inoue

doi:10.1016/S1386-9477(03)00307-2

Landau-level depopulation and high-field magneto-resistance of open quantum dots

R. Akis
, A. Ramamoorthy
, J. P. Bird
, T. Maemoto
, D. K. Ferry
, M. Inoue

Department of Electrical Engineering

University at Buffalo

Arizona State University
Osaka Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

We discuss the origin of the Shubnikov-de Haas oscillations (SdHO) that are observed in the magneto-resistance of strongly open quantum dots at magnetic fields where the Lorentz force on the electrons allows them to undergo cyclotron motion within the quantum dot. Similar to the discussion of this effect in two-dimensional electron systems, we find that the properties of the SdHOs in the dots are strongly affected by the presence of disorder, which serves to provide coupling between bulk- and edge-like dot eigenstates. As an example of this behavior, we present the results of studies of the SdHO in InAs open quantum dots.

Original language	English
Pages (from-to)	197-201
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	19
Issue number	1-2
DOIs	https://doi.org/10.1016/S1386-9477(03)00307-2
State	Published - Jul 2003
Event	Fourth International Symposium on Nanostructures and Mesoscopi - Tempe, AZ, United States Duration: Feb 17 2003 → Feb 21 2003

Keywords

Device Modeling
Disorder
Landau-level
Quantum dot
Quantum transport

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10.1016/S1386-9477(03)00307-2

Cite this

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title = "Landau-level depopulation and high-field magneto-resistance of open quantum dots",

abstract = "We discuss the origin of the Shubnikov-de Haas oscillations (SdHO) that are observed in the magneto-resistance of strongly open quantum dots at magnetic fields where the Lorentz force on the electrons allows them to undergo cyclotron motion within the quantum dot. Similar to the discussion of this effect in two-dimensional electron systems, we find that the properties of the SdHOs in the dots are strongly affected by the presence of disorder, which serves to provide coupling between bulk- and edge-like dot eigenstates. As an example of this behavior, we present the results of studies of the SdHO in InAs open quantum dots.",

keywords = "Device Modeling, Disorder, Landau-level, Quantum dot, Quantum transport",

author = "R. Akis and A. Ramamoorthy and Bird, \{J. P.\} and T. Maemoto and Ferry, \{D. K.\} and M. Inoue",

year = "2003",

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doi = "10.1016/S1386-9477(03)00307-2",

language = "English",

volume = "19",

pages = "197--201",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier B.V.",

number = "1-2",

note = "Fourth International Symposium on Nanostructures and Mesoscopi ; Conference date: 17-02-2003 Through 21-02-2003",

}

TY - JOUR

T1 - Landau-level depopulation and high-field magneto-resistance of open quantum dots

AU - Akis, R.

AU - Ramamoorthy, A.

AU - Bird, J. P.

AU - Maemoto, T.

AU - Ferry, D. K.

AU - Inoue, M.

PY - 2003/7

Y1 - 2003/7

N2 - We discuss the origin of the Shubnikov-de Haas oscillations (SdHO) that are observed in the magneto-resistance of strongly open quantum dots at magnetic fields where the Lorentz force on the electrons allows them to undergo cyclotron motion within the quantum dot. Similar to the discussion of this effect in two-dimensional electron systems, we find that the properties of the SdHOs in the dots are strongly affected by the presence of disorder, which serves to provide coupling between bulk- and edge-like dot eigenstates. As an example of this behavior, we present the results of studies of the SdHO in InAs open quantum dots.

AB - We discuss the origin of the Shubnikov-de Haas oscillations (SdHO) that are observed in the magneto-resistance of strongly open quantum dots at magnetic fields where the Lorentz force on the electrons allows them to undergo cyclotron motion within the quantum dot. Similar to the discussion of this effect in two-dimensional electron systems, we find that the properties of the SdHOs in the dots are strongly affected by the presence of disorder, which serves to provide coupling between bulk- and edge-like dot eigenstates. As an example of this behavior, we present the results of studies of the SdHO in InAs open quantum dots.

KW - Device Modeling

KW - Disorder

KW - Landau-level

KW - Quantum dot

KW - Quantum transport

UR - https://www.scopus.com/pages/publications/0043011382

U2 - 10.1016/S1386-9477(03)00307-2

DO - 10.1016/S1386-9477(03)00307-2

M3 - Conference article

SN - 1386-9477

VL - 19

SP - 197

EP - 201

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-2

T2 - Fourth International Symposium on Nanostructures and Mesoscopi

Y2 - 17 February 2003 through 21 February 2003

ER -

Landau-level depopulation and high-field magneto-resistance of open quantum dots

Abstract

Keywords

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