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Hysteresis and spin phase transitions in quantum wires in the integer quantum Hall regime
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-9863-2502
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 3, 035318-1-035318-5 p.Article in journal (Refereed) Published
Abstract [en]

We demonstrate that a split-gate quantum wire in the integer quantum Hall regime can exhibit electronic transport hysteresis for up- and down-sweeps of a magnetic field. This behavior is shown to be due to phase spin transitions between two different ground states with and without spatial spin polarization in the vicinity of the wire boundary. The observed effect has a many-body origin arising from an interplay between a confining potential, Coulomb interactions, and the exchange interaction. We also demonstrate and explain why the hysteretic behavior is absent for steep and smooth confining potentials and is present only for a limited range of intermediate confinement slopes. © 2007 The American Physical Society.

Place, publisher, year, edition, pages
College Park, MD, USA: American Physical Society , 2007. Vol. 75, no 3, 035318-1-035318-5 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-36002DOI: 10.1103/PhysRevB.75.035318ISI: 000243895400100Local ID: 29328OAI: oai:DiVA.org:liu-36002DiVA: diva2:256850
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13Bibliographically approved

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Publisher's full texthttp://staffwww.itn.liu.se/~igozo/papers_pdf/cond-mat_0607214_hysteresis.pdf

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Zozoulenko, IgorIhnatsenka, Siarhei

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