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Creep Motion in Two-Dimensional Fully Frustrated Coulomb Gas Model |
| REN Qing-Bao1;ZHOU Zhen-Chun1;CHEN Ju2;LUO Meng-Bo2 |
| 1Department of Physics, Lishui University, Lishui 323000
2Department of Physics, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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REN Qing-Bao, ZHOU Zhen-Chun, CHEN Ju et al 2007 Chin. Phys. Lett. 24 203-206 |
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Abstract The creep motion in a two-dimensional fully frustrated square lattice Coulomb gas model with disorders is studied by using the Monte Carlo technique. The dependence of charge current density J on electric field E is investigated at low temperature T and at low E. The results show that the creep obeys the Arrhenius law J ～ C(T) exp [-U(E)/T]. The prefactor C(T) increases with the temperature in a power law relation with an exponent about 3.0. The energy barrier U(E) increases logarithmically with Ec/E as U(E) ～ U0ln (Ec/E) with Ec being the critical field at zero temperature.
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| Keywords:
74.25.Qt
64.60.Ht
05.70.Ln
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Published: 01 January 2007
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