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Variational study of the ν=1 quantum Hall ferromagnet in the presence of spin-orbit interaction

Schliemann, J. and Egues, J. C. and Loss, D.. (2003) Variational study of the ν=1 quantum Hall ferromagnet in the presence of spin-orbit interaction. Physical Review B, Vol. 67, H. 8 , 085302, 9 S..

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Official URL: http://edoc.unibas.ch/dok/A5254705

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Abstract

We investigate the nu=1 quantum Hall ferromagnet in the presence of spin-orbit coupling of the Rashba or Dresselhaus type by means of Hartree-Fock-typed variational states. In the presence of Rashba (Dresselhaus) spin-orbit coupling the fully spin-polarized quantum Hall state is always unstable resulting in a reduction of the spin polarization if the product of the particle charge q and the effective g factor is positive (negative). In all other cases an alternative variational state with O(2) symmetry and finite in-plane spin components is lower in energy than the fully spin-polarized state for large enough spin-orbit interaction. The phase diagram resulting from these considerations differs qualitatively from earlier studies.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Institute of Physics
ISSN:0163-1829
Note:Variant title: Variational study of the nu=1 quantum Hall ferromagnet in the presence of spin-orbit interaction -- Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:48

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