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首页> 外文期刊>Physica, C. Superconductivity and its applications >Magnetic fields double frequency, ac and microwave, interaction with the vortex system in highly anisotropic BSCCO
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Magnetic fields double frequency, ac and microwave, interaction with the vortex system in highly anisotropic BSCCO

机译:高度各向异性的BSCCO中的磁场双频,交流和微波,与涡旋系统相互作用

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It is shown that in BSCCO below T-c, the microwave dissipation induced by the ac magnetic field, collinear with a dc field parallel to the a-b plane, is a double frequency process, where the ac fields prepares the vortex system to enable its interaction with the microwave. The signal intensity response of the ac field is nonlinear (NL). At dc fields, below 0.0025 T the ac field induces interaction with individual vortices. Above 0.005 T, two superimposed signals are observed that are attributed to ac field induced collective motion of pinned vortices and collective motion of Josephson unpinned vortices. The latter may be identified as an oscillation mode, excited by the microwave magnetic field. Defects, high temperatures and high ac fields impedes its excitation. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 20]
机译:结果表明,在低于Tc的BSCCO中,由交流磁场引起的微波耗散与平行于ab平面的dc场共线,是一个双频过程,其中ac场准备了涡旋系统以使其能够与涡流相互作用。微波。交流场的信号强度响应为非线性(NL)。在低于0.0025 T的直流磁场中,交流磁场引起与单个涡旋的相互作用。在0.005 T以上,观察到两个叠加信号,这是由于交流磁场引起的固定涡旋集体运动和约瑟夫森非固定涡旋集体运动。后者可以被识别为由微波磁场激发的振荡模式。缺陷,高温和高交流电场会阻碍其激发。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:20]

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