Kondo-like behavior near the metal-to-insulator transition of nanoscale granular aluminum

N. Bachar*, S. Lerer, S. Hacohen-Gourgy, B. Almog, G. Deutscher

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We show that the normal state transport properties of nanoscale granular aluminum films, near the metal to insulator transition, present striking similarities with those of Kondo systems. Those include a negative magnetoresistance, a minimum of resistance R at a temperature Tm in metallic films, a logarithmic rise at low temperatures, and a negative curvature of R(T) at high temperatures. These normal state properties are interpreted in terms of spin-flip scattering of conduction electrons by local magnetic moments, possibly located at the metal/oxide interfaces.

Original languageEnglish
Article number214512
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number21
DOIs
StatePublished - 18 Jun 2013

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