Giant, level-dependent g factors in InSb nanowire quantum dots.

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title = "Giant, level-dependent g factors in InSb nanowire quantum dots.",
abstract = "We report on magnetotransport measurements on InSb nanowire quantum dots. The measurements show that the quantum levels of the InSb quantum dots have giant g factors, with absolute values up to approximately 70, the largest value ever reported for semiconductor quantum dots. We also observe that the values of these g factors are quantum level dependent and can differ strongly between different quantum levels. The presence of giant g factors indicates that considerable contributions from the orbital motion of electrons are preserved in the measured InSb nanowire quantum dots, while the level-to-level fluctuations arise from spin-orbit interaction. We have deduced a value of Delta(SO) = 280 mueV for the strength of spin-orbit interaction from an avoided level crossing between the ground state and first excited state of an InSb nanowire quantum dot with a fixed number of electrons.",
author = "Henrik Nilsson and Philippe Caroff and Claes Thelander and Marcus Larsson and Jakob Wagner and Lars-Erik Wernersson and Lars Samuelson and Hongqi Xu",
note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Solid State Physics (011013006), Polymer and Materials Chemistry (LTH) (011001041), Electrical and information technology (011041010)",
year = "2009",
doi = "10.1021/nl901333a",
language = "English",
volume = "9",
pages = "3151--3156",
journal = "Nano Letters",
issn = "1530-6992",
publisher = "The American Chemical Society",
number = "9",