JOSEPHSON-JUNCTION LADDERS - GROUND-STATE AND RELAXATION PHENOMENA

被引：35
|
作者：
MAZO, JJ
FALO, F
FLORIA, LM
机构：
[1] Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza
来源：
PHYSICAL REVIEW B | 1995年 / 52卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.52.10433
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper considers a Josephson junction array with the geometry of a ladder and anisotropy in the Josephson couplings. The ground-state problem for the ladder corresponds to the one-for the one-dimensional chiral XY model in a twofold anisotropy field, which allows for a rigorous characterization of the ground-state phase diagram and the relevant elementary excitations for the system. The approach to equilibrium, which we study using Langevin dynamics, shows slow relaxation, typical of systems whose energy landscape in the configuration, space consists of a wealth of metastable states, dynamically disconnected.
引用
收藏
页码：10433 / 10440
页数：8
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