I-V CHARACTERISTICS FOR 2D SUPERCONDUCTORS FROM SIMULATIONS OF THE 2DCOULOMB GAS - DENSITY-DEPENDENCE AND EXPONENTS

Authors
HOLMLUND K MINNHAGEN P
Citation
K. Holmlund et P. Minnhagen, I-V CHARACTERISTICS FOR 2D SUPERCONDUCTORS FROM SIMULATIONS OF THE 2DCOULOMB GAS - DENSITY-DEPENDENCE AND EXPONENTS, Physica. C, Superconductivity, 292(3-4), 1997, pp. 255-263
Citations number
13
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
292
Issue
3-4
Year of publication
1997
Pages
255 - 263
Database
ISI
SICI code
0921-4534(1997)292:3-4<255:ICF2SF>2.0.ZU;2-P
Abstract
The two-dimensional Coulomb gas with Langevin dynamics is simulated. T he relation between the Coulomb gas charge current, I-CG, an applied e lectric field, E, and the particle density, n(p), is investigated. To leading order it is found that I-CG proportional to E(a)n(p)(1-b) belo w the Kosterlitz-Thouless transition. The new exponent b is determined together with the exponent a and the exponents are compared to curren t theories. Consequences for the non-linear I-V characteristics of two -dimensional superconductors are described. (C) 1997 Elsevier Science B.V.