Giant fluctuations and gate control of the g-factor in InAs nanowire quantum dots |
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Authors: | Csonka S Hofstetter L Freitag F Oberholzer S Schönenberger C Jespersen T S Aagesen M Nygård J |
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Affiliation: | Department of Physics, University of Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland. szabolcs.csonka@unibas.ch |
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Abstract: | We study the g-factor of discrete electron states in InAs nanowire based quantum dots. The g values are determined from the magnetic field splitting of the zero bias anomaly due to the spin 1/2 Kondo effect. Unlike to previous studies based on 2DEG quantum dots, the g-factors of neighboring electron states show a surprisingly large fluctuation: g can scatter between 2 and 18. Furthermore electric gate tunability of the g-factor is demonstrated. |
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