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Reinterpretation of the zero-temperature conductivity in icosahedral AlPdRe
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Material Physics, MF.
2016 (English)In: PHYSICAL REVIEW B, ISSN 2469-9950, Vol. 94, no 2, 024202Article in journal (Refereed) PublishedText
Abstract [en]

The zero-temperature conductivity sigma(0) of icosahedral (i)-AlPdRe has been found to be simply related to the resistance ratio R = rho(4.2 K)/rho(295 K) by a power law, sigma(0) similar to R (1.74), over four orders of magnitude in sigma(0). This relation includes metallic single grain samples, and polygrain samples of different morphologies which are metallic for small R values, and insulatinglike at large R. Electronic transport properties of single grain i-AlPdRe samples are thus found to be on common ground with polygrain i-AlPdRe. The relation between R and sigma(0) can be qualitatively understood from published band-structure calculations on quasicrystalline approximants.

Place, publisher, year, edition, pages
2016. Vol. 94, no 2, 024202
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-190488DOI: 10.1103/PhysRevB.94.024202ISI: 000379501200003ScopusID: 2-s2.0-84978655836OAI: diva2:954277

QC 20160822

Available from: 2016-08-22 Created: 2016-08-12 Last updated: 2016-08-22Bibliographically approved

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Rapp, Östen
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