DPMC-MaNEP, Université de Genève, Quai Ernest-Ansermet 24, 1211 Genève 4, Switzerland.
Phys Rev Lett. 2009 Dec 18;103(25):257001. doi: 10.1103/PhysRevLett.103.257001. Epub 2009 Dec 15.
Using scanning tunneling microscopy at 400 mK, we have obtained maps of around 100 vortices in SnMo(6)S(8) from 2-9 T. The orientational and positional disorder at 5 and 9 T show that these are the first large-scale images of a vortex glass. At higher temperature a magnetization peak effect is observed, whose upper boundary coincides with a lambda anomaly in the specific heat. Our data favor a kinetic glass description of the vortex melting transition, indicating that vortex topological disorder persists at fields and temperatures far below the peak effect in low-T(c) superconductors.
使用 400 mK 下的扫描隧道显微镜，我们已经从 2 到 9 T 获得了 SnMo(6)S(8)中约 100 个涡旋的图谱。在 5 和 9 T 时的取向和位置无序表明，这是涡旋玻璃的首批大规模图像。在较高温度下，观察到磁化强度峰效应，其上限与比热中的 λ 异常重合。我们的数据支持涡旋熔融相变的动力学玻璃描述，表明在远低于低 Tc 超导体中峰效应的场和温度下，涡旋拓扑无序仍然存在。
