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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2005, Volume 82, Issue 8, Pages 585–590 (Mi jetpl1599)  

CONDENSED MATTER

Coulomb oscillations of the current through spin-nondegenerate $p$ states of InAs quantum dots

Yu. N. Khanina, E. E. Vdovina, S. V. Dubonosa, A. Levinb, L. Eavesb, M. Heninib

a Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences
b The School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK
References:
Abstract: The electron transport is studied in split-gate structures fabricated on the basis of a modulation-doped heterostructure that contains a single quantum well and self-assembled InAs quantum dots near the 2D electron gas regions. The current passing through the channel with a denumerable set of InAs quantum dots is found to exhibit Coulomb oscillations as a function of the gate voltage. The oscillations are associated with the excited $p$ states of InAs quantum dots, which are characterized by opposite spins and caused by lifting of the spin degeneracy of the $p$ state due to the Coulomb interaction. The Coulomb oscillations of the current are observed up to a temperature of $\sim$20 K. The Coulomb energy is found to be $\Delta E_c=12.5$ meV, which agrees well with the theoretical estimates for the $p$ states of quantum dots in the structures under study.
Received: 05.09.2005
Revised: 15.09.2005
English version:
Journal of Experimental and Theoretical Physics Letters, 2005, Volume 82, Issue 8, Pages 526–531
DOI: https://doi.org/10.1134/1.2150874
Bibliographic databases:
Document Type: Article
PACS: 73.23.Hk, 73.40.Gk
Language: Russian
Citation: Yu. N. Khanin, E. E. Vdovin, S. V. Dubonos, A. Levin, L. Eaves, M. Henini, “Coulomb oscillations of the current through spin-nondegenerate $p$ states of InAs quantum dots”, Pis'ma v Zh. Èksper. Teoret. Fiz., 82:8 (2005), 585–590; JETP Letters, 82:8 (2005), 526–531
Citation in format AMSBIB
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\by Yu.~N.~Khanin, E.~E.~Vdovin, S.~V.~Dubonos, A.~Levin, L.~Eaves, M.~Henini
\paper Coulomb oscillations of the current through spin-nondegenerate $p$ states of InAs quantum dots
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2005
\vol 82
\issue 8
\pages 585--590
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\transl
\jour JETP Letters
\yr 2005
\vol 82
\issue 8
\pages 526--531
\crossref{https://doi.org/10.1134/1.2150874}
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