کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1864533 | 1530658 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Depinning of the f=1/2 square lattice Coulomb gas model at zero temperature
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The transport properties of the f=1/2 square lattice Coulomb gas model at zero temperature are studied using Monte Carlo technique. The dependence of charge current density J on the driving electric field E is investigated by gradually increasing the electric field E from the annealed ground state. For pure system without disorder, a discontinuous depinning transition accompanying with an order-disorder transition is found when we ramp up the field. While for system with disorder, a continuous depinning transition, which obeys Jâ¼(EâEc)β with scaling exponent βâ1.0 for large systems, is observed. At the depinning electric field Ec, the system crossovers from a disordered pinning state to a disordered moving state. We contribute the continuous depinning transition to the depinning of system from one of a vast of metastable states to other metastable states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 353, Issues 2â3, 24 April 2006, Pages 230-235
Journal: Physics Letters A - Volume 353, Issues 2â3, 24 April 2006, Pages 230-235
نویسندگان
Qing-Bao Ren, Meng-Bo Luo,