Zero-bias anomaly in ferromagnetic Ni nanoconstrictions
Zero-bias anomaly in ferromagnetic Ni nanoconstrictions
复制标题
铁磁镍纳米收缩中的零偏置异常
DOI：
10.1103/physrevb.86.064404
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
K. Ienaga;et al.
我们研究了在铁磁镍收缩的电导，改变其大小，使用机械可控的断开结技术。一个法诺共振与零偏置异常，可能是由于近藤效应，出现在镍原子尺度的接触，并改变形状的接触的大小变化。此外，零偏置异常持续存在于大尺寸收缩与近50个原子的配置，体铁磁性能应被保留，尽管信号强度的下降。结果表明，近藤效应和铁磁性可以共存的铁磁性纳米收缩。
We study the electrical conductance in a ferromagnetic Ni constriction, changing its size using a mechanically controllable break junction technique. A Fano resonance with a zero-bias anomaly, likely due to the Kondo effect, appears in Ni atomic-scale contacts and changes shape as the size of the contact changes. Moreover, the zero-bias anomaly persists in large size constrictions with nearly 50-atom configurations where the bulk ferromagnetic properties should be retained, despite the decrease of the signal intensity. The results suggest that the Kondo effect and ferromagnetism could coexist in the ferromagnetic nanoconstrictions.