signature=1de6d8b6d39a61a6db18a6c6a641cd60,1D-1D Coulomb Drag Signature of a Luttinger Liquid

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于 2021-05-30 11:58:54 发布

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研究人员报告了15纳米间隔的垂直集成量子线之间的库仑拖动测量，在低温下观察到显著变化。当温度接近1.6K时，拖动电阻出现上扬，这一现象与一维-一维量子线的Tomonaga-Luttinger液模型相吻合，揭示了1D系统中的新行为。

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摘要：

We report Coulomb drag measurements between vertically-integrated quantum wires separated by a barrier only 15 nm wide. The temperature dependence of the drag resistance is measured in the true one-dimensional (1D) regime where both wires have less than one 1D subband occupied. As a function of temperature, an upturn in the drag resistance is observed in three distinct devices at a temperature $T^* \sim 1.6$ K. This crossover in Coulomb drag behaviour is consistent with Tomonaga-Luttinger liquid models for the 1D-1D drag between quantum wires.

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