Spintronics in quantum dots: Fabrication and characterization of quantum dot single electron spin resonance devices

Tetsuo Kodera, Wilfred G. Van Der Wiel, Tatsuro Maruyama, Yoshiro Hirayama, Seigo Tarucha

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)

Abstract

We study few-electron GaAs quantum dot devices designed for generating a local AC magnetic field (~mT) in order to realize single-electron spin resonance. The AC magnetic field is induced by an AC current driven through a metal line in the vicinity of the dot. The Landé g-factor in the quantum dot is derived from the large (~T) in-plane magnetic field evolution of the Zeeman splitting observed in both Coulomb peak spacings and Coulomb diamonds. The obtained g-factor (|g| = 0.23) is significantly smaller than that for bulk GaAs. We measure electron transport through the dot for various AC currents and find evidence for the presence of an AC electric field in the form of photon assisted tunneling and current rectification. So far, we cannot confirm any effect of the AC magnetic field.

Original languageEnglish
Title of host publicationRealizing Controllable Quantum States
Subtitle of host publicationMesoscopic Superconductivity and Spintronics - In the Light of Quantum Computation
PublisherWorld Scientific Publishing Co.
Pages445-450
Number of pages6
ISBN (Electronic)9789812701619
ISBN (Print)9789812564689
DOIs
Publication statusPublished - 2005 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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