Relaxation behavior of two-dimensional superconducting arrays at low temperatures is investigated as the frustration due to transverse magnetic fields is varied. In the fully frustrated case, the relaxation is shown to be of a stretched exponential form, which is in sharp contrast with the algebraic one in the absence of magnetic fields. On the other hand, it is found that irrational frustration brings about peculiar size-dependence, manifesting the intrinsic finite-size effects present in the system. Finally, in the XY gauge glass, corresponding to the array under random magnetic fields, algebraic relaxation is observed, reflecting the emergence of algebraic glass ordering at low temperatures.
|Number of pages
|Physica A: Statistical Mechanics and its Applications
|Published - 15 Nov 2002
|Slow Dynamical Processes in Nature - Seoul, Korea, Republic of
Duration: 25 Nov 2001 → 27 Nov 2001
Bibliographical noteFunding Information:
This work was supported by the Korea Science and Engineering Foundation through the Center for Strongly Correlated Materials Research (GSJ) and by the Ministry of Education through the BK21 Project (MYC).
- Superconducting arrays