Magnetoresistively detected electron spin resonance in low-density two-dimensional electron gas in GaAs-AlGaAs single quantum wells

Electron spin resonance (ESR) is a natural candidate for quantum bit manipulation, provided that the confinement of a small number of electrons in a sufficiently small volume can be achieved. An important step is the development of low carrier density materials and structures in which the electron s...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on nanotechnology Vol. 4; no. 1; pp. 100 - 105
Main Authors Prati, E., Fanciulli, M., Kovalev, A., Caldwell, J.D., Bowers, C.R., Capotondi, F., Biasiol, G., Sorba, L.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2005
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Carrier density
Channels
Chemistry
Density
Electron paramagnetic resonance
Electron spin
Electron spin resonance
Electrons
Filling
Laboratories
Low-density electron gas
Magnetic fields
Magnetic resonance
Magnetoresistance
Microwave devices
nanotechnology
Paramagnetic resonance
Quantum dots
Quantum wells
quantum wells (QWs)
Two dimensional
Online AccessGet full text

Cover

More Information
Summary:Electron spin resonance (ESR) is a natural candidate for quantum bit manipulation, provided that the confinement of a small number of electrons in a sufficiently small volume can be achieved. An important step is the development of low carrier density materials and structures in which the electron spins are isolated and can be controlled by ESR. We report on the realization of three low-density (n/sub 1/=1.77/spl times/10/sup 10/, n/sub 2/=4.5/spl times/10/sup 10/, and n/sub 3/=9/spl times/10/sup 10/ cm/sup -2/ without the help of a gate to deplete the channel) two-dimensional electron systems in GaAs-AlGaAs single quantum wells (QWs) and on the magnetoresistively detected electron spin resonance (MDESR) measurements in these samples. The MDESR has been characterized at /spl nu/=1 and /spl nu/=3 and the current intensity, microwave power, and temperature dependence have been studied. The structures that have been investigated represent the lowest density single QW samples in which MDESR has been detected. The implications of detection of the MDESR at such low electron density to coupled quantum-dot spin device technology will be presented.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1536-125X
1941-0085
DOI:10.1109/TNANO.2004.840185