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arXiv 1002.0731cond-mat.mes-hall
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碳纳米管:一种低损耗自旋电流波导

Carbon nanotube: a low-loss spin-current waveguide

F. S. M. Guimarães, D. F. Kirwan, A. T. Costa, R. B. Muniz, D. L. Mills, M. S. Ferreira

摘要:

我们用量子力学方法证明了碳纳米管是优良的自旋电流波导,并且能够携带存储在旋进磁矩中的信息,并且具有非常小的色散和可调的衰减度。脉冲磁激发预计与纳米管费米速度旅行,并能够在远程位置诱导类似的激发。这种有效的磁信息传输方式表明,纳米管是具有快速磁化转换的存储器件的有希望的候选者。

英文摘要:

We demonstrate with a quantum-mechanical approach that carbon nanotubes are excellent spin-current waveguides and are able to carry information stored in a precessing magnetic moment for long distances with very little dispersion and with tunable degrees of attenuation. Pulsed magnetic excitations are predicted to travel with the nanotube Fermi velocity and are able to induce similar excitations in remote locations. Such an efficient way of transporting magnetic information suggests that nanotubes are promising candidates for memory devices with fast magnetization switchings.

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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