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Novel mechanism for rapid spin flip with increasing in-plane wave vector in slightly asymmetric modulation-doped quantum wells
KTH, School of Information and Communication Technology (ICT), Microelectronics and Information Technology, IMIT.
2008 (English)In: PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY, 2008, Vol. 100, no PART 5Conference paper, Published paper (Refereed)
Abstract [en]

We calculate the electric-field-induced spin splittings in wide slightly asymmetric modulation-doped quantum wells. When spin subbands are anticrossing we demonstrate twostep spin flips as the in-plane wave vector along the [11] direction is increased by 0.002 nm-1. At the beginning of this interval the y-component flips, at the end the x-component. Simultaneously the energy separation stays roughly constant below 1-eV and the wave functions are interchanged. A bias change of about 1 meV is sufficient to move the Fermi level from below to above the anticrossing region.

Place, publisher, year, edition, pages
2008. Vol. 100, no PART 5
Series
Journal of Physics Conference Series, ISSN 1742-6588 ; 100
Keyword [en]
Anticrossings, Energy separations, In-plane, Modulation-doped quantum wells, Spin flip, Spin splittings, Sub-bands, Elastic waves, Electron absorption, Semiconductor quantum wells, Structures (built objects), Spin dynamics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-154017DOI: 10.1088/1742-6596/100/5/052076ISI: 000275655200172Scopus ID: 2-s2.0-77954321461OAI: oai:DiVA.org:kth-154017DiVA: diva2:755233
Conference
17th International Vacuum Congress/13th International Conference on Surface Science/Internatinal Conference on Nanoscience and Technology, Stockholm, SWEDEN, JUL 02-06, 2007
Note

QC 20141014

Available from: 2014-10-14 Created: 2014-10-10 Last updated: 2014-10-14Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf