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arXiv 1302.7108cond-mat.mes-hall
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失配界面巨磁电阻理论

Theory of giant magnetoresistance at misfit interfaces

Daichi Asahi, Naoto Nagaosa

摘要:

本文从理论上研究了具有不同晶格常数a和b的两个平面系统之间的界面电阻。电阻和磁场的影响敏感地取决于比值a/b。放大的单位晶胞$λ= n_Aa = n_Bb$($n_A$,$n_B$:整数)的尺寸是关键量,并且穿过该放大的单位晶胞的磁通量确定电阻的振荡。因此,在a和b之间的(几乎)不相称关系下,磁阻非常增强。

英文摘要:

We study theoretically the resistance at the interface between the two planar systems with different lattice constants a and b. The resistance and the effect of the magnetic field depends sensitively on the ratio a/b. The size of the enlarged unit cell $λ= n_Aa = n_Bb$ ($n_A$, $n_B$: integers) is the crucial quantity, and the magnetic flux penetrating this enlarged unit cell determines the oscillation of the resistance. Therefore, the magnetoresistance is very much enhanced at (nearly) incommensurate relation between a and b.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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