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Conductivity of icosahedral AlPdRe
KTH, School of Information and Communication Technology (ICT), Material Physics.
Department of Physics, University of Virginia, Charlottesville, Virginia.
2011 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 84, no 17, 174206-1-17406-6 p.Article in journal (Refereed) Published
Abstract [en]

The electrical conductivity σ(T) of icosahedral (i) AlPdRe has been studied in order to address current problems and controversies. Two new approaches are presented. The temperature T0 below which variable range hopping occurs was estimated directly from dσ(T)/dT, avoiding the problem of the finite σ(0) in i-AlPdRe. Secondly, σ(T) is compared in detail for samples with radically different defects and morphologies. The temperature dependence of σ(T) is found to be independent of these varying sample conditions. This finding rules out some proposed conduction mechanisms.

Place, publisher, year, edition, pages
Ridge N.Y.: The American Physical Society (APS) , 2011. Vol. 84, no 17, 174206-1-17406-6 p.
Keyword [en]
isosahedral AlPdRe, conductivity, variable range hopping, control of defects
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:kth:diva-61065DOI: 10.1103/PhysRevB.84.174206ISI: 000296861000003OAI: oai:DiVA.org:kth-61065DiVA: diva2:478450
Projects
European Newtwork of Excellence on Complex Metallic Alloys
Note
QC 20120117Available from: 2012-01-16 Created: 2012-01-16 Last updated: 2017-12-08Bibliographically approved

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