Monte carlo simulation of B-T phase diagrams in a model high-T_c superconductors

机译：Mode Carlo模拟型号高T_C超导体中的B-T相图

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The vortex dynamics in a two-dimensional Abricosov lattice of vortex pancakes have been simulated by using Monte Carlo technique. The vortices are treated as massless classical particles with a long-range repulsive interaction. Parameters are taken typical of the copper oxide planes in high-T_c superconductors. We have obtained the pictures of positions of a subset of the vortices in the presence of different numbers of pinning centers. Pinning was represented by a finite number of randomly distributed short-range attractive potential wells. In order to study the melting transition and phase diagram the hexatic order parameter S_6 as a function of temperature at different magnetic fields have been calculated. It was found that melting point T_m in H-T diagrams shifts due to the introducing of defects.

机译：通过使用Monte Carlo技术模拟了涡旋煎饼的二维Abricosov格子中的涡流动力学。涡流被视为具有远程排斥相互作用的无麻的古典颗粒。参数典型的高T_C超导体中的铜氧化面。在不同数量的钉扎中心存在下，我们已经获得了涡流子集的位置的照片。通过有限数量的随机分布的短程有吸引力潜在井来表示钉扎。为了研究熔化的转变和相位图，已经计算了作为不同磁场的温度函数的Hexatic阶数参数S_6。结果发现，由于缺陷引入，H-T图中的熔点T_M移位。

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《International workshop on critical currents in superconductors》|1996年||共4页
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I.A.Rudnev; V.Akashurnikov; M.V.Katargin;
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中图分类超导体、超导体材料;
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Monte carlo simulation of B-T phase diagrams in a model high-T_c superconductors

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