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25 April 2024 |
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Magnetization of Quantum Dots: A Measure of Anisotropy and the Rashba Interaction | | Siranush Avetisyan
; Tapash Chakraborty
; Pekka Pietilainen
; | | Date: |
5 Jan 2015 | | Abstract: | The magnetization of anisotropic quantum dots in the presence of the Rashba
spin-orbit interaction has been studied for three interacting electrons in the
dot. We observe unique behaviors of magnetization that are direct reflections
of the anisotropy and the spin-orbit interaction parameters independently or
concurrently. In particular, there are saw-tooth structures in the magnetic
field dependence of the magnetization, as caused by the electron-electron
interaction, that are strongly modified in the presence of large anisotropy and
high strength of the spin-orbit interactions. We report the temperature
dependence of magnetization that indicates the temperature beyond which these
structures due to the interactions disappear. Additionally, we found the
emergence of a weak saw-tooth structure in magnetization in the high anisotropy
and large spin-orbit interaction limit that was explained as a result of
merging of two low-energy curves when the level spacings evolve with increasing
values of the anisotropy and the spin-orbit interaction strength. | | Source: | arXiv, 1501.1025 | | Services: | Forum | Review | PDF | Favorites | |
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