Magnetic Proximity Effect At The Molecular Scale: First-principles Calculations

Dongping Liu; Yibin Hu; Hong Guo; X. F. Han

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Magnetic Proximity Effect At The Molecular Scale: First-principles Calculations

机译：分子尺度上的磁邻近效应：第一性原理计算

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We report first-principles analysis of equilibrium and nonequilibrium quantum transport in a Langmuir-Blodgett (LB) film contacted by Fe electrodes. For several LB molecules with different lengths, transport is in the tunneling regime. We found that spin-polarized transport is closely related to a magnetic proximity effect that causes the LB film to develop small but finite magnetic character that determines spin-polarized current and produces unusual tunnel magnetoresistance (TMR) ratio versus bias voltage. This unusual TMR was observed experimentally.

机译：我们报告第一原理分析的平衡和非平衡量子传输中的Fe电极接触的Langmuir-Blodgett（LB）膜。对于几个不同长度的LB分子，运输处于隧穿状态。我们发现自旋极化的传输与磁性邻近效应密切相关，该效应导致LB膜发展出很小但有限的磁性，从而决定了自旋极化电流并产生不寻常的隧道磁阻（TMR）与偏置电压之比。通过实验观察到这种不寻常的TMR。

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来源
《Physical review》 |2008年第19期|49-52|共4页
作者
Dongping Liu; Yibin Hu; Hong Guo; X. F. Han;
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正文语种 eng
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nanoelectronic devices; spin transport through interfaces;

机译：纳米电子设备;通过接口的自旋传输;

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Magnetic Proximity Effect At The Molecular Scale: First-principles Calculations

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