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首页> 外文期刊>Zeitschrift fur Physik, B. Condensed Matter >Vortex lattice accommodation on twin boundaries in YBa_2Cu_3O_7 studied by neutron diffraction
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Vortex lattice accommodation on twin boundaries in YBa_2Cu_3O_7 studied by neutron diffraction

机译：中子衍射研究YBa_2Cu_3O_7孪晶边界上的涡旋晶格适应

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摘要

An extensive study of small angle neutron scattering was performed in twinned YBa_2Cu_3O_7 crystals in its superconducting state as a function of the angle θ_B between the c-axis of the crystal and the magnetic field. The half of the twin boundaries are oriented in the horizontal plane, which also contains the neutron beam and the magnetic field. Two different diffraction patterns are studied as a function of θ_B at 5 K and B = 0.5 T, one along the c-axis of the crystal, the other one along the applied field. These variations are interpreted in the model of accommodation of the vortices on the twin planes by zigzagging from these planes to the ab-planes of the crystal, in order to minimize their energy.
机译：孪晶YBa_2Cu_3O_7晶体在超导状态下随晶体c轴与磁场之间的夹角θ_B的变化，对小角度中子散射进行了广泛的研究。孪生边界的一半位于水平面，其中也包含中子束和磁场。在5 K和B = 0.5 T时，研究了两种不同的衍射图作为θ_B的函数，一种是沿着晶体的c轴，另一种是沿着施加场。通过从晶体的这些平面到晶体的ab平面之字形弯曲，在双平面上的涡流适应模型中解释了这些变化，以使它们的能量最小。

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