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Strongly nonequilibrium flux flow in the presence of perforating submicron holes

机译:在亚微米孔眼中存在强烈的非平衡通量流

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We report on the effects of perforating submicron holes on the vortex dynamics of amorphous Nb0.7Ge0.3 micro-bridges in the strongly nonequilibrium mixed state, when vortex properties change substantially. In contrast to the weak nonequilibrium-when the presence of holes may result in either an increase (close to T-c) or a decrease (well below T-c) of the dissipation, in the strong nonequilibrium an enhanced dissipation is observed irrespectively of the bath temperature. Close to T, this enhancement is similar to that in the weak nonequilibrium, but corresponds to vortices shrunk due to the Larkin-Ovchinnikov mechanism. At low temperatures the enhancement is a consequence of a weakening of the flux pinning by the holes in a regime where electron heating dominates the superconducting properties. (c) 2005 Elsevier B.V. All rights reserved.
机译:我们报告了在强烈的非平衡混合状态下,当涡流性质发生实质性变化时,亚微米穿孔对非晶Nb0.7Ge0.3微桥的涡流动力学的影响。与弱的不平衡相反,当孔的存在可能导致耗散的增加(接近T-c)或减少(远低于T-c)时,在强的不平衡中,观察到的耗散增强与浴温无关。接近T,这种增强类似于弱非平衡中的增强,但是对应于由于Larkin-Ovchinnikov机理而收缩的涡旋。在低温下,这种增强是由于在电子加热主导超导性能的情况下,空穴对通孔钉扎的削弱。 (c)2005 Elsevier B.V.保留所有权利。

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