论文标题
在电容性耦合超导纳米线中的超导体 - 绝缘体过渡
Superconductor-insulator transition in capacitively coupled superconducting nanowires
论文作者
论文摘要
我们研究了超平球的超导量量子相变，并具有增殖的量子相滑动的超导超导纳米线。我们得出了一组耦合的berezinskii-kosterlitz-无与伦比的重新归一化组方程，表明其中一根电线中的量子相位滑动之间的相互作用由于在另一根电线中传播的等离子模式的效果而被修改。结果，每条电线中的超导体 - 绝缘体相变不仅受其自身参数的控制，而且由相邻的电线以及相互电容的参数控制。我们认为，一旦将它们带到足够接近的纳米线，就可以使用正确选择的参数将纳米线变成绝缘。
We investigate superconductor-insulator quantum phase transitions in ultrathin capacitively coupled superconducting nanowires with proliferating quantum phase slips. We derive a set of coupled Berezinskii-Kosterlitz-Thouless-like renormalization group equations demonstrating that interaction between quantum phase slips in one of the wires gets modified due to the effect of plasma modes propagating in another wire. As a result, the superconductor-insulator phase transition in each of the wires is controlled not only by its own parameters but also by those of the neighboring wire as well as by mutual capacitance. We argue that superconducting nanowires with properly chosen parameters may turn insulating once they are brought sufficiently close to each other.
