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摘要翻译：
通过对无序介质中驱动的一维弹性界面的数值模拟，研究了脱皮转变时的热效应。我们发现，在临界脱粘力下，界面的速度可以用幂律$v\sim t^\psi$正确地描述，其中$\psi$是热指数。利用临界力与样品有关的值，我们直接从速度与温度的关系中精确地计算出$\psi$的值，得到$\psi=0.15\pm0.01$。通过测量界面的结构因子，我们发现热圆化和t=0脱平分都显示出相同的大尺度几何结构，由特征长度与速度的相同散度$\xi\propto v^{-\nu/\beta}$描述，其中$\nu$和$\beta$分别是t=0相关指数和脱平分指数，而t=0脱平分指数和t=0脱平分指数是t\xi\propto v^{-\nu/beta}$是t\xi\propto v^{-\nu/beta}$是t=0相关指数和t=0脱平分指数。我们讨论了我们的结果与以前的热指数估计的比较，以及对最近铁磁薄膜中磁畴壁运动实验的直接后果。
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英文标题：
《Thermal rounding of the depinning transition》
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作者：
S. Bustingorry, A. B. Kolton, T. Giamarchi
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics 物理学
二级分类：Disordered Systems and Neural Networks 无序系统与神经网络
分类描述：Glasses and spin glasses; properties of random, aperiodic and quasiperiodic systems; transport in disordered media; localization; phenomena mediated by defects and disorder; neural networks
眼镜和旋转眼镜；随机、非周期和准周期系统的性质；无序介质中的传输；本地化；由缺陷和无序介导的现象；神经网络
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英文摘要：
We study thermal effects at the depinning transition by numerical simulations of driven one-dimensional elastic interfaces in a disordered medium. We find that the velocity of the interface, evaluated at the critical depinning force, can be correctly described with the power law $v\sim T^\psi$, where $\psi$ is the thermal exponent. Using the sample-dependent value of the critical force, we precisely evaluate the value of $\psi$ directly from the temperature dependence of the velocity, obtaining the value $\psi = 0.15 \pm 0.01$. By measuring the structure factor of the interface we show that both the thermally-rounded and the T=0 depinning, display the same large-scale geometry, described by an identical divergence of a characteristic length with the velocity $\xi \propto v^{-\nu/\beta}$, where $\nu$ and $\beta$ are respectively the T=0 correlation and depinning exponents. We discuss the comparison of our results with previous estimates of the thermal exponent and the direct consequences for recent experiments on magnetic domain wall motion in ferromagnetic thin films.
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PDF链接：
https://arxiv.org/pdf/707.0345
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