Universal scaling of magnetoconductance in magnetic nanocontacts (invited)
Universal scaling of magnetoconductance in magnetic nanocontacts (invited)
复制标题
磁性纳米接触中磁导的通用缩放（邀请）
DOI：
10.1063/1.1556131
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发表时间：
2003
影响因子：
3.2
通讯作者：
R. Gomez
中科院分区：
文献类型：
--
作者：
S. Chung;M. Muñoz;N. García;W. Egelhoff;R. Gomez
我们目前的结果，形成的半金属铁磁体的原子纳米接触的CrO 2-CrO 2和CrO 2-Ni，表现出高达400%的磁导。对所有已知表现出所谓的弹道磁阻的材料的磁导与电导数据的分析强烈表明，纳米接触的磁导遵循普遍的缩放。如果将最大磁导归一化为1，并将电导缩放为材料的电阻率，则所有数据点都落入与接触材料和传输机制无关的通用曲线中。该分析适用于文献中的磁性纳米接触的所有可用的磁导数据，并且结果与考虑磁畴壁内的自旋散射的理论一致。
We present results of half-metallic ferromagnets formed by atomic nanocontact of CrO2–CrO2 and CrO2–Ni that show as much as 400% magnetoconductance. Analysis of the magnetoconductance versus conductance data for all materials known to exhibit so-called ballistic magnetoresistance strongly suggests that the magnetoconductance of nanocontacts follows universal scaling. If the maximum magnetoconductance is normalized to unity and the conductance is scaled to the resistivity of the material, then all data points fall into a universal curve that is independent of the contact material and the transport mechanism. The analysis was applied to all available magnetoconductance data of magnetic nanocontacts in the literature, and the results agree with theory that takes into account the spin scattering within a magnetic domain wall.
金-并五苯-金纳米接触的量子化电导波动
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Y. Kihira;T. Shimada;H. Hasegawa
通讯作者：
H. Hasegawa