TY - JOUR
T1 - Anomalous Finite-Size Effect in Superconducting Josephson Junction Arrays
AU - Chen, Qing-Hu
AU - Tang, Lei-Han
AU - Tong, Peiqing
N1 - This work is supported by the Research Grant Council (RGC) of the Hong Kong SAR under Grant No.
HKBU2061, by the Hong Kong Baptist University under Grant No. FRG/98-99/II-74, and by the National Science Foundation under Grant No. PHY99-07949. One of us (Q. H. C.) is supported in part by the National Nature Science Foundation of China under Grant No. 10075039.
PY - 2001/8/6
Y1 - 2001/8/6
N2 - We show that a previously reported discrepancy between simulations of superconducting Josephson junction arrays and the theoretical analysis of Ambegaokar, Halperin, Nelson, and Siggia (AHNS) [Phys. Rev. Lett. 40, 783 (1978)] is rooted in a peculiar finite-size effect under periodic boundary conditions. Our simulation results for the largest array support the power-law I-V curves predicted by AHNS. Analysis of the vortex dynamics reveals two intrinsic length scales set by the applied current, which define three size regimes with distinctive I-V characteristics.
AB - We show that a previously reported discrepancy between simulations of superconducting Josephson junction arrays and the theoretical analysis of Ambegaokar, Halperin, Nelson, and Siggia (AHNS) [Phys. Rev. Lett. 40, 783 (1978)] is rooted in a peculiar finite-size effect under periodic boundary conditions. Our simulation results for the largest array support the power-law I-V curves predicted by AHNS. Analysis of the vortex dynamics reveals two intrinsic length scales set by the applied current, which define three size regimes with distinctive I-V characteristics.
UR - http://www.scopus.com/inward/record.url?scp=85037201966&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.87.067001
DO - 10.1103/PhysRevLett.87.067001
M3 - Journal article
AN - SCOPUS:0035816994
SN - 0031-9007
VL - 87
JO - Physical Review Letters
JF - Physical Review Letters
IS - 6
M1 - 067001
ER -