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arXiv 1809.08009cond-mat.mes-hallquant-ph
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一维半导体纳米线的超长自旋寿命

Ultralong spin lifetimes in one-dimensional semiconductor nanowires

Florian Dirnberger, Michael Kammermeier, Jan König, Moritz Forsch, Paulo E. Faria Junior, Tiago Campos, Jaroslav Fabian, John Schliemann, Christian Schüller, To… 展开作者

Florian Dirnberger, Michael Kammermeier, Jan König, Moritz Forsch, Paulo E. Faria Junior, Tiago Campos, Jaroslav Fabian, John Schliemann, Christian Schüller, Tobias Korn, Paul Wenk, Dominique Bougeard

摘要:

实验证明了半导体纳米线在一维量子极限下的超长自旋寿命。光学探测不同直径的单线揭示了自旋弛豫时间的数量级的增加,因为电子变得越来越局限,直到只有一个单一的一维子带填充。我们发现所观察到的自旋寿命超过$200\,\textrm{ns}$,导致对主要的自旋弛豫机制的1D电子的鲁棒性,突出了这些线的有前途的潜力,为长距离传输的相干自旋信息。

英文摘要:

We experimentally demonstrate ultralong spin lifetimes of electrons in the one-dimensional (1D) quantum limit of semiconductor nanowires. Optically probing single wires of different diameters reveals an increase in the spin relaxation time by orders of magnitude as the electrons become increasingly confined until only a single 1D subband is populated. We find the observed spin lifetimes of more than $200\,\textrm{ns}$ to result from the robustness of 1D electrons against major spin relaxation mechanisms, highlighting the promising potential of these wires for long-range transport of coherent spin information.

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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