超导体涡旋的混沌与塑性：一种低维动力学
Chaos and plasticity in superconductor vortices: a low-dimensional dynamics
摘要：
我们提出了新的结果的数值模拟驱动涡旋晶格在零温度下的随机无序的存在。我们表明，涡的塑性动力学显示耗散混沌。间歇性“混乱的路线”已经清楚地确定低于微分电阻峰值。峰值区具有混沌特性的正李雅普诺夫指数和低频宽带噪声。此外，我们发现一个低的分形维数的奇异吸引子，这表明，只有少数动力学变量是足够的模型复杂的塑性动力学的旋涡。
英文摘要：
We present new results of numerical simulations for driven vortex lattices in presence of random disorder at zero temperature. We show that the plastic dynamics of vortices display dissipative chaos. Intermittency "routes to chaos" have been clearly identified below the differential resistance peak. The peak region is characterized by positive Lyapunov exponents characteristic of chaos, and low frequency broad-band noise. Furthermore we find a low fractal dimension of the strange attractor, which suggests that only a few dynamical variables are sufficient to model the complex plastic dynamics of vortices.
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