Current Correlations from a Mesoscopic Anyon Collider.
Current Correlations from a Mesoscopic Anyon Collider.
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介观任意子对撞机的电流相关性
DOI：
10.1103/physrevlett.116.156802
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发表时间：
2016
影响因子：
8.6
通讯作者：
Bertrand I. Halperin
中科院分区：
文献类型：
--
作者：
Bernd Rosenow;Ivan P. Levkivskyi;Bertrand I. Halperin
费米子和玻色子是交换统计的基本实现，交换统计控制着两个粒子在空间上彼此接近的概率。分数量子霍尔效应中的任意子是介于玻色子和费米子之间的交换统计的一个例子。我们分析了两束任意子相互碰撞的介观装置，并将电流波动的相关性与粒子在空间上相互排斥的概率联系起来。虽然费米子的当前相关性消失了，但与费米子相比，任意子的负相关性是空间排他性降低的明显标志。
Fermions and bosons are fundamental realizations of exchange statistics, which governs the probability for two particles being close to each other spatially. Anyons in the fractional quantum Hall effect are an example for exchange statistics intermediate between bosons and fermions. We analyze a mesoscopic setup in which two dilute beams of anyons collide with each other, and relate the correlations of current fluctuations to the probability of particles excluding each other spatially. While current correlations for fermions vanish, negative correlations for anyons are a clear signature of a reduced spatial exclusion as compared to fermions.