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首页> 外文期刊>Journal of Superconductivity >Mixed-State Microwave Response in Superconducting Cuprates
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Mixed-State Microwave Response in Superconducting Cuprates

机译：超导铜酸盐中的混合态微波响应

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摘要

We report measurements of the magnetic field induced microwave complex resistivity in REBa{sub}2Cu{sub}3O{sub}(7-δ) thin films, with RE = Y, Sm. Measurements are performed at 48 GHz by means of a resonant cavity in the end-wall-replacement configuration. The magnetic field dependence is investigated by applying a moderate (0.8 T) magnetic field along the c-axis. The measured vortex-state complex resistivity in YBa{sub}2Cu{sub}3O{sub}(7-δ) and SmBa{sub}2Cu{sub}3O{sub}(7-δ) is analyzed within the well-known models for vortex dynamics. It is shown that attributing the observed response to vortex motion alone leads to inconsistencies in the as-determined vortex parameters (such as the vortex viscosity and the pinning constant). By contrast, attributing the entire response to field-induced pair breaking leads to a nearly quantitative description of the data.
机译：我们报告了REBa {sub} 2Cu {sub} 3O {sub}（7-δ）薄膜中磁场感应的微波复电阻率的测量结果，RE = Y，Sm。在端壁更换配置中，通过谐振腔以48 GHz进行测量。通过沿c轴施加中等（0.8 T）磁场来研究磁场依赖性。在众所周知的范围内分析了YBa {sub} 2Cu {sub} 3O {sub}（7-δ）和SmBa {sub} 2Cu {sub} 3O {sub}（7-δ）中测得的涡旋态复电阻率涡动力学模型。结果表明，仅将观察到的响应归因于涡旋运动会导致所确定的涡旋参数（例如涡旋粘度和钉扎常数）不一致。相比之下，将整个响应归因于磁场引起的线对断开导致对数据进行近乎定量的描述。

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