Spatially resolved ballistic optoelectronic transport measured by quantized photocurrent spectroscopy

Klaus Dieter Hof; Franz J. Kaiser; Markus Stallhofer; Dieter Schuh; Werner Wegscheider; Peter Hänggi; Sigmund Kohler; Jörg P. Kotthaus; Alexander W. Holleitner

doi:10.1021/nl102068v

Spatially resolved ballistic optoelectronic transport measured by quantized photocurrent spectroscopy

Klaus Dieter Hof, Franz J. Kaiser, Markus Stallhofer, Dieter Schuh, Werner Wegscheider, Peter Hänggi, Sigmund Kohler, Jörg P. Kotthaus, Alexander W. Holleitner

Chair of Nanotechnology and Nanomaterials

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

6 Scopus citations

Abstract

GaAs-based quantum point contacts (QPCs) are exploited to spatially resolve and analyze the ballistic, nonequilibrium flow of photogenerated electrons in a nanoscale circuit. Electron-hole pairs are photogenerated in a two-dimensional electron gas (2DEG), and the resulting current through an adjacent QPC is measured as a function of the laser spot position. The transmission of photogenerated electrons through the QPC is governed by the energy dispersion and the quantized momentum values of the electron modes in the QPC.

Original language	English
Pages (from-to)	3836-3840
Number of pages	5
Journal	Nano Letters
Volume	10
Issue number	10
DOIs	https://doi.org/10.1021/nl102068v
State	Published - 13 Oct 2010

Keywords

Ballistic optoelectronic quantum transport
nanoscale electronics

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10.1021/nl102068v

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title = "Spatially resolved ballistic optoelectronic transport measured by quantized photocurrent spectroscopy",

abstract = "GaAs-based quantum point contacts (QPCs) are exploited to spatially resolve and analyze the ballistic, nonequilibrium flow of photogenerated electrons in a nanoscale circuit. Electron-hole pairs are photogenerated in a two-dimensional electron gas (2DEG), and the resulting current through an adjacent QPC is measured as a function of the laser spot position. The transmission of photogenerated electrons through the QPC is governed by the energy dispersion and the quantized momentum values of the electron modes in the QPC.",

keywords = "Ballistic optoelectronic quantum transport, nanoscale electronics",

author = "Hof, \{Klaus Dieter\} and Kaiser, \{Franz J.\} and Markus Stallhofer and Dieter Schuh and Werner Wegscheider and Peter H{\"a}nggi and Sigmund Kohler and Kotthaus, \{J{\"o}rg P.\} and Holleitner, \{Alexander W.\}",

year = "2010",

month = oct,

day = "13",

doi = "10.1021/nl102068v",

language = "English",

volume = "10",

pages = "3836--3840",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

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T1 - Spatially resolved ballistic optoelectronic transport measured by quantized photocurrent spectroscopy

AU - Hof, Klaus Dieter

AU - Kaiser, Franz J.

AU - Stallhofer, Markus

AU - Schuh, Dieter

AU - Wegscheider, Werner

AU - Hänggi, Peter

AU - Kohler, Sigmund

AU - Kotthaus, Jörg P.

AU - Holleitner, Alexander W.

PY - 2010/10/13

Y1 - 2010/10/13

N2 - GaAs-based quantum point contacts (QPCs) are exploited to spatially resolve and analyze the ballistic, nonequilibrium flow of photogenerated electrons in a nanoscale circuit. Electron-hole pairs are photogenerated in a two-dimensional electron gas (2DEG), and the resulting current through an adjacent QPC is measured as a function of the laser spot position. The transmission of photogenerated electrons through the QPC is governed by the energy dispersion and the quantized momentum values of the electron modes in the QPC.

AB - GaAs-based quantum point contacts (QPCs) are exploited to spatially resolve and analyze the ballistic, nonequilibrium flow of photogenerated electrons in a nanoscale circuit. Electron-hole pairs are photogenerated in a two-dimensional electron gas (2DEG), and the resulting current through an adjacent QPC is measured as a function of the laser spot position. The transmission of photogenerated electrons through the QPC is governed by the energy dispersion and the quantized momentum values of the electron modes in the QPC.

KW - Ballistic optoelectronic quantum transport

KW - nanoscale electronics

UR - https://www.scopus.com/pages/publications/77958061861

U2 - 10.1021/nl102068v

DO - 10.1021/nl102068v

M3 - Article

AN - SCOPUS:77958061861

SN - 1530-6984

VL - 10

SP - 3836

EP - 3840

JO - Nano Letters

JF - Nano Letters

IS - 10

ER -

Spatially resolved ballistic optoelectronic transport measured by quantized photocurrent spectroscopy

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Keywords

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