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arXiv 1909.05698cond-mat.str-el
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一维弹道LaAlO $_3$ / SrTiO $_3$通道的Pascal电导序列

Pascal conductance series in ballistic one-dimensional LaAlO$_3$/SrTiO$_3$ channels

Megan Briggeman, Michelle Tomczyk, Binbin Tian, Hyungwoo Lee, Jung-Woo Lee, Yuchi He, Anthony Tylan-Tyler, Mengchen Huang, Chang-Beom Eom, David Pekker, Roger S… 展开作者

Megan Briggeman, Michelle Tomczyk, Binbin Tian, Hyungwoo Lee, Jung-Woo Lee, Yuchi He, Anthony Tylan-Tyler, Mengchen Huang, Chang-Beom Eom, David Pekker, Roger S. K. Mong, Patrick Irvin, Jeremy Levy

摘要:

创造和研究复合费米子相的能力为强关联量子物质的研究开辟了新的途径。本文报道了在LaAlO $_3$ /SrTiO $_3$界面形成的强相互作用电子波导中的一系列量子化电导台阶的实验观察。波导电导遵循帕斯卡三角形内的特征序列:$(1, 3, 6, 10, 15, ...)\cdot e^2/h$,其中$e$是电子电荷,$h$是普朗克常量。这些步骤相对于磁场和栅极电压的鲁棒性表明形成了由$n = 2, 3, 4, ...$电子的束缚态形成的简并量子液体的新家族。这些实验可以为从中子星到固态材料再到夸克-胶子等离子体的各种复合费米子相提供固态模拟物。

英文摘要:

The ability to create and investigate composite fermionic phases opens new avenues for the investigation of strongly correlated quantum matter. We report the experimental observation of a series of quantized conductance steps within strongly interacting electron waveguides formed at the LaAlO$_3$/SrTiO$_3$ interface. The waveguide conductance follows a characteristic sequence within Pascal's triangle: $(1, 3, 6, 10, 15, ...)\cdot e^2/h$, where $e$ is the electron charge and $h$ is the Planck constant. The robustness of these steps with respect to magnetic field and gate voltage indicate the formation of a new family of degenerate quantum liquids formed from bound states of $n = 2, 3, 4, ...$ electrons. These experiments could provide solid-state analogues for a wide range of composite fermionic phases ranging from neutron stars to solid-state materials to quark-gluon plasmas.

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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