Magnetic-field-induced singularities in spin-dependent tunneling through InAs quantum dots

Hapke-Wurst, I.; Zeitler, U.; Frahm, Holger; Jansen, A.G.M.; Haug, Rolf J.; Pierz, Klaus

Original version

Hapke-Wurst, I.; Zeitler, U.; Frahm, H.; Jansen, A.G.M.; Haug, R.J.; Pierz, K.: Magnetic-field-induced singularities in spin-dependent tunneling through InAs quantum dots. In: Physical Review B 62 (2000), Nr. 19, S. 12621-12624. DOI: https://doi.org/10.1103/PhysRevB.62.12621

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To cite the version in the repository, please use this identifier: https://doi.org/10.15488/2841

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Abstract:
Current steps attributed to resonant tunneling through individual InAs quantum dots embedded in a GaAs-AlAs-GaAs tunneling device are investigated experimentally in magnetic fields up to 28 T. The steps evolve into strongly enhanced current peaks in high fields. This can be understood as a field-induced Fermi-edge singularity due to the Coulomb interaction between the tunneling electron on the quantum dot and the partly spin-polarized Fermi sea in the Landau quantized three-dimensional emitter.
License of this version:	Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
Publication type:	Article
Publishing status:	publishedVersion
Publication date:	2000
Keywords english:	aluminum, astatine, indium, article, calculation, electron, energy, magnetic field
DDC:	530 \| Physik