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arXiv 1709.09058cond-mat.mes-hall
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一种基于电容谱的门控电子晶格实现平台

A capacitance spectroscopy-based platform for realizing gate-defined electronic lattices

T. Hensgens, U. Mukhopadhyay, P. Barthelemy, S. Fallahi, G. C. Gardner, C. Reichl, W. Wegscheider, M. J. Manfra, L. M. K. Vandersypen

摘要:

半导体中的静电约束为模拟二维晶格中的相互作用电子提供了灵活的平台,包括在存在规范场的情况下。这种组合提供了实现大量量子相的潜力。在这里,我们提出了一个测量和制造方案,建立在电容光谱,并允许对二维电子气的密度和周期性的潜在强度的独立控制。我们的特点是无序水平和(中)同质性,并制定和优化不同的门控策略,在长度尺度的相互作用预计是强大的。这些想法的延续可能会看到相互作用驱动的莫特跃迁或霍夫斯塔德蝴蝶物理学的仿真。

英文摘要:

Electrostatic confinement in semiconductors provides a flexible platform for the emulation of interacting electrons in a two-dimensional lattice, including in the presence of gauge fields. This combination offers the potential to realize a wide host of quantum phases. Here we present a measurement and fabrication scheme that builds on capacitance spectroscopy and allows for the independent control of density and periodic potential strength imposed on a two-dimensional electron gas. We characterize disorder levels and (in)homogeneity and develop and optimize different gating strategies at length scales where interactions are expected to be strong. A continuation of these ideas might see to fruition the emulation of interaction-driven Mott transitions or Hofstadter butterfly physics.

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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