论文标题
补偿电流在弱的josphson耦合方面的作用：关于激子约瑟夫森连接的扩展研究
Role of the compensating current in the weak Josphson coupling regime: An extended study on excitonic Josephson junctions
论文作者
论文摘要
黄的实验[物理学。莱特牧师。 $ \ bf 109 $，156802（2012）]在Corbino几何形状的量子厅双层中发现，在两个边缘的层间隧道电流相互耦合，两种隧道电流之一称为另一种补偿电流。我们的另一项作品[Arxiv：2006.15329]解释了这种异国情调的耦合现象是由于层间隧穿电流引起的激子约瑟夫森效应的结果。在本文中，我们研究了相同的设置 - 激烈的约瑟夫森连接 - 但在弱的约瑟夫森耦合方案中，这是针对大连接长度发生的。有趣的是，我们发现补偿电流驱动另一个边缘从超氟到电阻状态的非平衡相变，这是由于临界隧道电流的突然跳跃发出的。我们还确定关键指数，并提供更多的实验预测。
Huang's experiment [Phys. Rev. Lett. $\bf 109$, 156802 (2012)] found, in the quantum Hall bilayer of the Corbino geometry, the interlayer tunneling currents at two edges are coupled to each other and one of two tunneling currents is referred to as the compensating current of the other. Our another work[arXiv:2006.15329] has explained this exotic coupling phenomenon as a result of excitonic Josephson effect induced by interlayer tunneling current. In this paper, we study the same setup -- excitonic Josephson junction -- but in the weak Josephson coupling regime, which occurs for large junction length. Interestingly, we find the compensating current drives the other edge to undergo a nonequilibrium phase transition from a superfluid to resistive state, which is signaled by an abrupt jump of the critical tunneling current. We also identify the critical exponent and furthermore offer more experimental prediction.
