论文标题
在浴缸电势上的弹性界面的热舍入量
Thermally rounded depinning of an elastic interface on a washboard potential
论文作者
论文摘要
通过分析参数和非常准确的数值模拟，研究了弹性界面滑动势能滑动的静置过渡的热圆形。我们确认标准观点是，考虑到前进运动缺陷的热激活成核可以计算平均速度以下。但是，我们发现，该分析的直接扩展到接近或高于含量的阈值并不能完全描述热辅助运动的物理。特别是，我们发现，正是在默认点上，平均速度并不遵循温度的纯幂，因为类比与标准相变的类比很天真地期望，但提出了微妙的对数校正。我们解释了这些校正背后的物理机制，并认为它们是非熟悉的集体效应，也可能适用于在不相关的无序景观上滑动的接口情况。
The thermal rounding of the depinning transition of an elastic interface sliding on a washboard potential is studied through analytic arguments and very accurate numerical simulations. We confirm the standard view that well below the depinning threshold the average velocity can be calculated considering thermally activated nucleation of forward moving defects. However, we find that the straightforward extension of this analysis to near or above the depinning threshold does not fully describe the physics of the thermally assisted motion. In particular, we find that exactly at the depinning point the average velocity does not follow a pure power-law of the temperature as naively expected by the analogy with standard phase transitions but presents subtle logarithmic corrections. We explain the physical mechanisms behind these corrections and argue that they are non-peculiar collective effects which may also apply to the case of interfaces sliding on uncorrelated disordered landscapes.
