Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 943-957 |
| Number of pages | 15 |
| Journal | Journal of Physics Condensed Matter |
| Volume | 12 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2000 Feb 14 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
Cite this
Capacitively coupled Josephson-junction chains : Straight versus slanted coupling. / Choi, Mahn-Soo; Choi, M. Y.; Lee, Sung Ik.
In: Journal of Physics Condensed Matter, Vol. 12, No. 6, 14.02.2000, p. 943-957.Research output: Contribution to journal › Article
}
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
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.
UR - http://www.scopus.com/inward/record.url?scp=0342348059&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0342348059&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/12/6/316
DO - 10.1088/0953-8984/12/6/316
M3 - Article
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 -