Tailoring magnetoresistance through rotating Ni particles

Tailoring magnetoresistance through rotating Ni particles
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通过旋转镍颗粒调整磁阻

DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
I. Mertig
I. Mertig
中科院分区:
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文献类型:
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作者:
S. Achilles;M. Czerner;I. Mertig

文献摘要

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我们给出了不同Ni纳米接触的从头算研究,并指出由于接触中的原子重排,这种收缩的电导发生了变化。特别是,我们考虑了一个镍粒子,并表明磁阻可以从几个变化到50%,甚至可以作为粒子与引线之间形成的接触面积的函数而反转符号。
We present \textit{ab initio} studies for different Ni nanocontacts and show changes in the conductance of such constrictions due to atomic rearrangements in the contact. In particular we consider a Ni particle and show that the magnetoresistance can change from a few to 50% and can even reverse sign as a function of the contact area formed between the particle and the leads.