Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2007-10-22
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 8 figures, Accepted for publication in Rev. Sci. Instrum. The bibliography file is updated
Scientific paper
10.1063/1.2799735
Microwave band on-chip microcoils are developed for the application to single electron spin resonance measurement with a single quantum dot. Basic properties such as characteristic impedance and electromagnetic field distribution are examined for various coil designs by means of experiment and simulation. The combined setup operates relevantly in the experiment at dilution temperature. The frequency responses of the return loss and Coulomb blockade current are examined. Capacitive coupling between a coil and a quantum dot causes photon assisted tunneling, whose signal can greatly overlap the electron spin resonance signal. To suppress the photon assisted tunneling effect, a technique for compensating for the microwave electric field is developed. Good performance of this technique is confirmed from measurement of Coulomb blockade oscillations.
Kubo Toshihiro
Obata Toshiaki
Pioro-Ladriere Michel
Tarucha Seigo
Tokura Yasuhiro
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