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arXiv 0903.3558cond-mat.dis-nncond-mat.supr-con
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弱随机柱状无序下的受驱动磁通线晶格:运动玻色玻璃的相变温度行为和动态熔化

Driven flux-line lattices in the presence of weak random columnar disorder: Finite-temperature behavior and dynamical melting of moving Bose glass

Y. Fily, E. Olive, J. C. Soret

摘要:

我们使用三维数值模拟来探索在有限温度和高驱动力下存在弱随机柱状无序的驱动磁通线晶格的相图。我们表明,移动玻色玻璃相存在于一个大的温度范围内,直到其熔融成一个移动的旋涡液体。它也是非常稳定的速度增加:动力学过渡到相关的运动玻璃预期在临界速度没有发现在任何速度访问我们的模拟。此外,我们表明存在一个有效的静态锡屋顶钉扎潜在的横向运动的方向,这源于横向周期性的移动晶格和本地化效应,由于相关的障碍。使用一个简单的模型,在这样一个周期性的潜在的一个单一的弹性线,我们得到一个很好的描述的横向场渗透在表面作为厚度的函数在移动玻色玻璃相。

英文摘要:

We use 3D numerical simulations to explore the phase diagram of driven flux line lattices in presence of weak random columnar disorder at finite temperature and high driving force. We show that the moving Bose glass phase exists in a large range of temperature, up to its melting into a moving vortex liquid. It is also remarkably stable upon increasing velocity : the dynamical transition to the correlated moving glass expected at a critical velocity is not found at any velocity accessible to our simulations. Furthermore, we show the existence of an effective static tin roof pinning potential in the direction transverse to motion, which originates from both the transverse periodicity of the moving lattice and the localization effect due to correlated disorder. Using a simple model of a single elastic line in such a periodic potential, we obtain a good description of the transverse field penetration at surfaces as a function of thickness in the moving Bose glass phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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