Evidence for an insulating ground state in high-resistivity icosahedral AlPdRe from the magnetoresistance
2001 (English)In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 6317, no 17Article in journal (Refereed) Published
Magnetoresistance (MR) has been studied between 1.5-8 K in magnetic fields B up to 12 T in icosahedral (i)-AlPdRe samples prepared by two different methods and with resistance ratios R[ = rho (4 K)/rho (295 K)] from 45-160. The observed temperature- and field-dependence of the MR could be well described by variable-range hopping of the Efros-Shklovskii type. The results give compelling empirical evidence for an insulating ground state of i-AlPdRe for R greater than or equal to 45, and suggest that the metal-insulator transition in i-AlPdRe can be monitored by the R value.
Place, publisher, year, edition, pages
2001. Vol. 6317, no 17
al-pd-re, range-hopping conduction, quasi-crystals, positive magnetoresistance, negative magnetoresistance, quantum interference, regime, transition, localization, scattering
IdentifiersURN: urn:nbn:se:kth:diva-20591ISI: 000168487300005OAI: oai:DiVA.org:kth-20591DiVA: diva2:339287
QC 201005252010-08-102010-08-10Bibliographically approved