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Giant fluctuations and gate control of the g-factor in InAs nanowire quantum dots.

Authors
  • Csonka, S
  • Hofstetter, L
  • Freitag, F
  • Oberholzer, S
  • Schönenberger, C
  • Jespersen, T S
  • Aagesen, M
  • Nygård, J
Type
Published Article
Journal
Nano letters
Publication Date
Nov 01, 2008
Volume
8
Issue
11
Pages
3932–3935
Identifiers
DOI: 10.1021/nl802418w
PMID: 18937519
Source
Medline
License
Unknown

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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