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Investigation of the super-efficient Rashba effect by simulation of Shubnikov-de Haas oscillations in a two-dimensional hole gas
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
2006 (English)In: Physica. E, Low-Dimensional systems and nanostructures, ISSN 1386-9477, E-ISSN 1873-1759, Vol. 34, no 02-jan, 377-380 p.Article in journal (Refereed) Published
Abstract [en]

The Shubnikov-de Haas effect is frequently used for two-dimensional systems to determine individual subband populations, e.g. when the subbands are split by the Rashba effect. We have previously shown that the Rashba effect can give a wave vector splitting for holes that is up to three orders of magnitude larger than for electrons at the same electric field. To reach the optimum we have made a careful design of a modulation-doped quantum well with a top gate in which the negative differential Rashba effect is utilized. From the calculated hole Landau levels we determine the density of states at the Fermi energy and demonstrate a clear difference between the symmetric case without bias and the asymmetric case with a gate voltage of 100 meV, where the spin subband populations differ by a factor 3.

Place, publisher, year, edition, pages
2006. Vol. 34, no 02-jan, 377-380 p.
Keyword [en]
splitting, Rashba effect, holes, quantum well, inversion asymmetry, electric-field, quantum-wells, spin, microstructures, approximation, systems
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-15930DOI: 10.1016/j.physe.2006.03.093ISI: 000239903200095Scopus ID: 2-s2.0-33746394110OAI: oai:DiVA.org:kth-15930DiVA: diva2:333972
Note
QC 20100525 QC 20110927. Conference: 16th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-16). Albuquerque, NM. JUL 10-15, 2005 Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Gvozdic, Dejan M.Ekenberg, Ulf
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CiteExportLink to record
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  • apa
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  • de-DE
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