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Electron Transport in Low Dimensional Systems

Ramvall, Peter LU (1996)
Abstract (Swedish)
Popular Abstract in Swedish

Avhandlingen består av transportmätningar på AlGaAs/GaAs och GaInAs/InP heterostrukturer.
Abstract
This thesis consists of experimental studies of transport properties in high mobility two dimensional electron gases (2DEGs). Two material systems are used, an AlGaAs/GaAs heterojunction and a GaInAs/InP quantum well.



The AlGaAs/GaAs heterojunction is used for top gating, either to additionally reduce the dimensionality of the 2DEG to observe one dimensional effects, or to explore the edge channel picture employed to describe electron transport in high magnetic fields.



For the other materials system, the GaInAs/InP quantum well, a complete description of the development of a heterostructure were the highest electron mobility ever achieved in a ternary material is given. In addition, several transport... (More)
This thesis consists of experimental studies of transport properties in high mobility two dimensional electron gases (2DEGs). Two material systems are used, an AlGaAs/GaAs heterojunction and a GaInAs/InP quantum well.



The AlGaAs/GaAs heterojunction is used for top gating, either to additionally reduce the dimensionality of the 2DEG to observe one dimensional effects, or to explore the edge channel picture employed to describe electron transport in high magnetic fields.



For the other materials system, the GaInAs/InP quantum well, a complete description of the development of a heterostructure were the highest electron mobility ever achieved in a ternary material is given. In addition, several transport effects introduced by the special qualities of the ternary semiconductor, GaInAs, such as alloy-disorder scattering and the pinning of the Fermi level in the conduction band, are discussed. (Less)
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author
opponent
  • Prof. Ikoma, Toshi, Texas Instruments, Japan
organization
publishing date
type
Thesis
publication status
published
subject
keywords
high mobility, low-dimensional structures, III-V semiconductors, quantum wells, heterojunctions, quantum Hall effect, edge channels, Shubnikov-de Haas effect, alloy-disorder scattering, Y-branch switch, two dimensional electron gas, Fysik, Fysicumarkivet A:1996:Ramvall, Physics, spin splitting, mag
pages
156 pages
publisher
Peter Ramvall, Vattenverksvägen 17D, 21221 Malmö
defense location
Lecture hall B, Fysicum
defense date
1996-12-16 10:15
external identifiers
  • Other:ISRN: LUFTD2/TFFF--96/1044--SE
ISBN
91-628-2279-9
language
English
LU publication?
yes
id
9855293d-2041-48f1-a501-5e6ce073ee9f (old id 28871)
date added to LUP
2007-06-14 10:34:55
date last changed
2016-09-19 08:45:02
@misc{9855293d-2041-48f1-a501-5e6ce073ee9f,
  abstract     = {This thesis consists of experimental studies of transport properties in high mobility two dimensional electron gases (2DEGs). Two material systems are used, an AlGaAs/GaAs heterojunction and a GaInAs/InP quantum well.<br/><br>
<br/><br>
The AlGaAs/GaAs heterojunction is used for top gating, either to additionally reduce the dimensionality of the 2DEG to observe one dimensional effects, or to explore the edge channel picture employed to describe electron transport in high magnetic fields.<br/><br>
<br/><br>
For the other materials system, the GaInAs/InP quantum well, a complete description of the development of a heterostructure were the highest electron mobility ever achieved in a ternary material is given. In addition, several transport effects introduced by the special qualities of the ternary semiconductor, GaInAs, such as alloy-disorder scattering and the pinning of the Fermi level in the conduction band, are discussed.},
  author       = {Ramvall, Peter},
  isbn         = {91-628-2279-9},
  keyword      = {high mobility,low-dimensional structures,III-V semiconductors,quantum wells,heterojunctions,quantum Hall effect,edge channels,Shubnikov-de Haas effect,alloy-disorder scattering,Y-branch switch,two dimensional electron gas,Fysik,Fysicumarkivet A:1996:Ramvall,Physics,spin splitting,mag},
  language     = {eng},
  pages        = {156},
  publisher    = {ARRAY(0x9124268)},
  title        = {Electron Transport in Low Dimensional Systems},
  year         = {1996},
}