Capacitively coupled Josephson-junction chains: straight versus slanted coupling
Capacitively coupled Josephson-junction chains: straight versus slanted coupling
复制标题
电容耦合约瑟夫森结链：直耦合与倾斜耦合
DOI：
10.1088/0953-8984/12/6/316
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Mahn‐Soo Choi
中科院分区：
文献类型：
--
作者：
Mahn‐Soo Choi
本文研究了两个电容耦合超小约瑟夫森结链系统的量子相变。两个不同的方案的耦合，直的和倾斜的，两个链之间被认为是。在这两种耦合方案中，随着耦合电容的增加，粒子-空穴对的传输被发现驱动Berezinskiii-Kosterlitz-无介电常数类型的量子相变从绝缘体到超导体。观察到两种耦合方案中的转变点之间存在很大差异，这反映了输运机制之间的差异。
We investigate analytically the quantum phase transition in a system of two chains of ultrasmall Josephson junctions, coupled capacitively with each other. Two different schemes of the coupling, straight and slanted, between the two chains are considered. In both coupling schemes, as the coupling capacitance is increased, the transport of particle-hole pairs is found to drive a quantum phase transition of the Berezinskii-Kosterlitz-Thouless type from insulator to superconductor. A substantial discrepancy between the transition points in the two coupling schemes is observed, which reflects the difference between the transport mechanisms.
影响因子：
44.1
作者：
Sondhi, SL;Girvin, SM;Shahar, D
通讯作者：
Shahar, D