Field evolution of vortex lattice in LuNi 2 B 2 C seen by decoration in fields up to 1.5 kOe
Field evolution of vortex lattice in LuNi 2 B 2 C seen by decoration in fields up to 1.5 kOe
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在高达 1.5 kOe 的场中通过修饰观察到 LuNi 2 B 2 C 中涡旋晶格的场演化
DOI：
10.1103/physrevb.64.024504
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发表时间：
2001
影响因子：
3.7
通讯作者：
V. Kogan
中科院分区：
文献类型：
--
作者：
L. Vinnikov;T. L. Barkov;P. Canfield;S. Bud’ko;V. Kogan
涡晶格的演化，包括菱形-方形转变，对于 ${\mathrm{LuNi}}_{2}{\mathrm{B}}_{2}\mathrm{C}$ 在沿 c 晶轴的场中，通过装饰技术跟踪到记录高（对于这种方法）1480 Oe 的场。借助傅里叶变换对装饰图像进行分析，该变换表明几个 Oe 的小区域中的无序结构。在字段 $Hl200 \mathrm{Oe}$ 中观察到不同结构的共存域。采用基于傅立叶变换的技术来单独查看域。在 900 Oe 附近记录到了向方晶格的转变。结果与非局域伦敦理论的预测一致。
Evolution of the vortex lattice, the rhombus-square transition included, for ${\mathrm{LuNi}}_{2}{\mathrm{B}}_{2}\mathrm{C}$ in the field along the c crystal axis, is tracked by the decoration technique pushed up to the record high (for this method) field of 1480 Oe. Decoration images are analyzed with the help of the Fourier transform, which indicates disordered structures in small fields of a few Oe. In fields $Hl200 \mathrm{Oe}$ the coexisting domains of different structures are observed. A technique based on the Fourier transform is employed to see the domains separately. The transition to the square lattice is recorded near 900 Oe. The results are in agreement with predictions of the nonlocal London theory.