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Shear Surface Acoustic Waves in Superconductors

机译:超导体中的剪切表面声波

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It was shown that in type Ⅱ superconductors the propagation of surface acoustic waves due to their interaction with magnetic flux vortices via pinning centers is possible. The wave has got the only shear displacement component and its penetration depth significantly exceeds those for Rayleigh wave. When wave frequency exceeds Campbell frequency (approximately free volume vortices regime) the penetration depth is defined by the ratio of mechanical stiffness to the surface pinning value. If frequency drops down or volume pinning grows up the wave localization near the surface significantly decreases.
机译:结果表明,在Ⅱ类超导体中,由于表面声波通过钉扎中心与磁通量涡旋相互作用而传播是可能的。该波具有唯一的剪切位移分量,其穿透深度大大超过了瑞利波。当波频率超过坎贝尔频率(近似自由体积涡旋状态)时,穿透深度由机械刚度与表面钉扎值的比值定义。如果频率下降或体积钉扎增大,则在表面附近的波定位将显着降低。

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