Electric-field-driven vortex lattice-glass transition and history effect in RBa2Cu3O7-y (R=Y,Nd) single crystals
Electric-field-driven vortex lattice-glass transition and history effect in RBa2Cu3O7-y (R=Y,Nd) single crystals
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RBa2Cu3O7-y (R=Y,Nd) 单晶中电场驱动的涡旋晶格玻璃化转变和历史效应
DOI：
10.1103/physrevb.63.214521
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
A. Zhukov
中科院分区：
文献类型：
--
作者：
H. Küpfer;A. Will;R. Meier;T. Wolf;A. Zhukov
在固体涡旋状态的晶格玻璃化转变的研究在非常干净，自然双自由RBa 2Cu 3 O 7-？y（R=Y，Nd）单晶。我们证明，这种转变是由电场E除了磁场和无序。随着磁场扫描速率的增加，dB/dt？~ E时，跃迁场移动到其平衡值以下。这个有趣的和意想不到的观察是有关的注入无序的涡旋晶格在样品表面的大电场。在有序相引入的无序的快速退火的结果在一个不寻常的不可逆磁矩的时间依赖性衰减。进一步讨论了这种亚稳行为与路径相关磁历史效应的相关性。
The lattice-glass transition in the solid vortex state is investigated in very clean, naturally twin-free RBa2Cu3O7-?y(R=Y,Nd) single crystals. We demonstrate that this transition is driven by the electric field E in addition to magnetic field and disorder. With increasing sweep rate of the magnetic field dB/dt?~E, the transition field shifts below its equilibrium value. This interesting and unexpected observation is related to the injection of disorder into the vortex lattice from large electric fields at the sample surface. The fast annealing of introduced disorder in the ordered phase results in an unusual time-dependent decay of the irreversible magnetic moment. The correlation of this metastable behavior with path-dependent magnetic history effects is further discussed.