TY - JOUR
T1 - Kondo-Fano resonance in atomic-scale contacts for ferromagnetic metals
AU - Islam, M. S.
AU - Takata, H.
AU - Ueno, Y.
AU - Ienaga, K.
AU - Inagaki, Y.
AU - Tsujii, H.
AU - Kawae, T.
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research (Grant Nos. 25220605, 25287076 and 26600102) from the Japan Society for the Promotion of Science.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/4/6
Y1 - 2017/4/6
N2 - 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.
AB - 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.
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U2 - 10.1088/1742-6596/807/8/082002
DO - 10.1088/1742-6596/807/8/082002
M3 - Conference article
AN - SCOPUS:85018247209
VL - 807
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 8
M1 - 082002
T2 - 18th International Conference on Strongly Correlated Electron Systems, SCES 2016
Y2 - 9 May 2016 through 13 May 2016
ER -