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arXiv 0810.0531cond-mat.mes-hall
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界面结构对Fe/ZnSe(001)单势垒和双势垒结隧穿磁电阻的影响

Tunneling magnetoresistance of Fe/ZnSe (001) single- and double-barrier junctions as a function of interface structure

J. Peralta-Ramos, A. M. Llois

摘要:

在这篇文章中,我们计算了自旋相关的弹道和相干输运通过外延Fe/ZnSe(001)简单和双磁隧道结与两种不同的界面终端:Zn终止和Se终止。的结的电子结构是由第二近邻{ \it spd}紧束缚哈密顿参数化为{ \it从头计算能带结构,而电导和隧道磁阻计算内Landauer的形式主义。计算是在零偏置电压下进行的,并且是能量的函数。我们显示和讨论的界面结构上的自旋相关的运输通过简单和双隧道结的影响。

英文摘要:

In this contribution, we calculate the spin-dependent ballistic and coherent transport through epitaxial Fe/ZnSe (001) simple and double magnetic tunnel junctions with two different interface terminations: Zn-terminated and Se-terminated. The electronic structure of the junctions is modeled by a second-nearest neighbors {\it spd} tight-binding Hamiltonian parametrized to {\it ab initio} calculated band structures, while the conductances and the tunneling magnetoresistance are calculated within Landauer's formalism. The calculations are done at zero bias voltage and as a function of energy. We show and discuss the influence of the interface structure on the spin-dependent transport through simple and double tunnel junctions.

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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