0.7 Analogue structures and exchange interactions in quantum wires
2004 (English)In: Solid State Communications, ISSN 0038-1098, Vol. 131, no 9-10 SPEC. ISS., 591-597 p.Article in journal (Refereed) Published
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.
A. Nanostructures, A. Semiconductors, B. Electron-electron interactions, B. Electronic transport
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-45641DOI: 10.1016/j.ssc.2004.05.048OAI: oai:DiVA.org:liu-45641DiVA: diva2:266537