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0.7 Analogue structures and exchange interactions in quantum wires
Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, United Kingdom.
Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, United Kingdom.
Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, United Kingdom.
Cavendish Laboratory, Madingley Road, Cambridge CB3 OHE, United Kingdom, School of Physics, University of New South Wales, Sydney, NSW 2052, Australia.
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2004 (English)In: Solid State Communications, ISSN 0038-1098, E-ISSN 1879-2766, Vol. 131, no 9-10 SPEC. ISS., 591-597 p.Article in journal (Refereed) Published
Abstract [en]

We present experimental studies of crossings of spin-split one-dimensional subbands in ballistic quantum wires in an in-plane magnetic field B ?. At low electron densities, a spontaneous spin-splitting occurs as subbands cross, which gives rise to additional non-quantised conductance structures called 0.7 analogues. We analyse the data within a spin-density-functional model, which includes exchange interactions in a magnetic field. Focussing on the region of the crossings of spin-split subbands, it is found that the energy levels rearrange as they cross due to exchange interactions. © 2004 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2004. Vol. 131, no 9-10 SPEC. ISS., 591-597 p.
Keyword [en]
A. Nanostructures, A. Semiconductors, B. Electron-electron interactions, B. Electronic transport
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-45641DOI: 10.1016/j.ssc.2004.05.048OAI: oai:DiVA.org:liu-45641DiVA: diva2:266537
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Berggren, Karl-FredrikJaksch, PeterDebnarova, Andrea

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Berggren, Karl-FredrikJaksch, PeterDebnarova, Andrea
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