论文标题
放松和超导体中的非本地电阻率边界层
Relaxation and a non-local, resistivity boundary layer in superconductors
论文作者
论文摘要
像其他固体一样的超导体无法立即从热激发（受干扰）状态到热力学平衡放松。在本文中，模拟了来自热激发的多丝膜和薄膜超导体的放松。辐射的吸收或在导体运动下，机械张力向热能的释放和转化就是例子。本文应用了超导能状态的数值模拟，因为许多粒子系统，在基本的热力学和标准，多组分传热原理下（固体传导和薄膜中的辐射）。最近描述的显微镜稳定性模型和传统的连续细胞模型的应用，可以解释临界温度低于临界温度的抗性与温度偏移的曲率，并提出了一种替代标准解释，该标准解释超过TCRIT时，温度增加的电导率提高。在临界温度附近观察到非本地电阻率边界层（温度不确定性），其中电阻率曲线从超导状态（正常传导电阻率）平稳接近。 关键字超导体；相变；松弛;临界电流密度；临界温度；热波动；边界层
Superconductors like other solids cannot relax instantaneously from thermally excited (disturbed) states to thermodynamic equilibrium. In this paper, relaxation of a multi-filamentary and of a thin film superconductor from thermal excitations is simulated. Absorption of radiation or, under conductor movement, release and transformation of mechanical tension to thermal energy are examples. The paper applies numerical simulations of superconductor energy states, as many-particle systems, under basic thermodynamic and standard, multi-component heat transfer principles (solid conduction plus radiation in thin films). A recently described microscopic stability model and application of a traditional, continuum cell model allows to explain curvature of the resistance vs. temperature excursion below critical temperature, TCrit, and suggests an alternative to standard explanation of increased electrical conductivity at temperature exceeding TCrit. A non-local, resistivity boundary layer (a temperature uncertainty) is observed near critical temperature within which the resistivity curve smoothly approaches, from the superconducting state, the normal conduction resistivity. Keywords Superconductor; phase transition; relaxation; critical current density; critical temperature; thermal fluctuations; boundary layers
