Kondo-Fano resonance in atomic-scale contacts for ferromagnetic metals

M. S. Islam, H. Takata, Y. Ueno, K. Ienaga, Y. Inagaki, H. Tsujii, T. Kawae

Research output: Contribution to journalConference article

Abstract

The electrical conductance of cobalt (Co) nano-scale contacts prepared by a Mechanically Controllable Break Junction (MCBJ) technique has been studied to understand the origin of Fano resonance in ferromagnetic atomic-sized contacts. In an atomic-scale contacts, the zero-bias anomaly is well-fitted by the Fano formula. The characteristic temperature, which is introduced as the fitting parameter of that formula, exhibits the log-normal distribution. These indicate that the anomaly is likely caused by Kondo effect. Moreover, the zero-bias anomaly is observed in large scale contacts where the bulk ferromagnetic properties should be retained. This suggests the coexistence of Kondo effect and ferromagnetism.

Original languageEnglish
Article number082002
JournalJournal of Physics: Conference Series
Volume807
Issue number8
DOIs
Publication statusPublished - Apr 6 2017
Event18th International Conference on Strongly Correlated Electron Systems, SCES 2016 - Hangzhou, China
Duration: May 9 2016May 13 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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