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arXiv 1807.02792cond-mat.mes-hall
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稳定分支电子流

Stable Branched Electron Flow

B A Braem, C Gold, S Hennel, M Röösli, M Berl, W Dietsche, W Wegscheider, K. Ensslin, T Ihn

摘要:

扫描门显微镜显示的分支电子流的图案显示弹道电子轨迹的分布。图案的细节由远低于费米能量的幅度的远程掺杂剂的相关势确定。我们发现,即使电子密度显着降低,费米能量的变化超过背景电位振幅的模式仍然存在。分支图案对于载流子密度的变化是鲁棒的,但对于由样品的附加照明引起的背景电势的变化不是鲁棒的。

英文摘要:

The pattern of branched electron flow revealed by scanning gate microscopy shows the distribution of ballistic electron trajectories. The details of the pattern are determined by the correlated potential of remote dopants with an amplitude far below the Fermi energy. We find that the pattern persists even if the electron density is significantly reduced such that the change in Fermi energy exceeds the background potential amplitude. The branch pattern is robust against changes in charge carrier density, but not against changes in the background potential caused by additional illumination of the sample.

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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