TY - JOUR
T1 - Capacitively coupled Josephson-junction chains
T2 - Straight versus slanted coupling
AU - Choi, Mahn Soo
AU - Choi, M. Y.
AU - Lee, Sung Ik
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2000/2/14
Y1 - 2000/2/14
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-8984/12/6/316
DO - 10.1088/0953-8984/12/6/316
M3 - Article
AN - SCOPUS:0342348059
VL - 12
SP - 943
EP - 957
JO - Journal of physics. Condensed matter : an Institute of Physics journal
JF - Journal of physics. Condensed matter : an Institute of Physics journal
SN - 0953-8984
IS - 6
ER -