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Electric-field control of magnetization in biased semiconductor quantum wires and point contacts
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, The Institute of Technology.
2011 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 83, no 075308Article in journal (Refereed) Published
Abstract [en]

true origin of the 0.25 and 0.85 conductance features which have been observed in biased split-gatequantum wires and quantum point contacts in semiconductor heterostructures is debated in the literature; onesuggestion is that they are caused by spontaneous spin polarization due to the electron-electron interactions. Thepresent work confirms that spontaneous spin splitting may occur within the system and is responsible for boththe 0.25 and 0.85 plateaux. We have also shown that the 0.25 plateau consists of two regions, one that is spinpolarized, and one that is degenerate with a conductance that remains essentially the same at both sides of thetransition. This finding could be of interest for semiconductor spintronics because it opens the possibility for spinmanipulation by electric means only.

Place, publisher, year, edition, pages
American Physical Society , 2011. Vol. 83, no 075308
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Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-65793DOI: 10.1103/PhysRevB.83.075308ISI: 000287484500003OAI: oai:DiVA.org:liu-65793DiVA: diva2:399003
Note
Original Publication: Hans Lind, Yakimenko Irina I. and Karl-Fredrik Berggren, Electric-field control of magnetization in biased semiconductor quantum wires and point contacts, 2011, Physical Review B Condensed Matter, (83), 075308. http://dx.doi.org/10.1103/PhysRevB.83.075308 Copyright: American Physical Society http://www.aps.org/Available from: 2011-02-21 Created: 2011-02-21 Last updated: 2017-12-11

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Lind, HansYakimenko, Irina IBerggren, Karl-Fredrik

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