Interband phase modes and nonequilibrium soliton structures in two-gap superconductors.
Interband phase modes and nonequilibrium soliton structures in two-gap superconductors.
复制标题
二能隙超导体中的带间相位模式和非平衡孤子结构。
DOI：
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发表时间：
2002
影响因子：
8.6
通讯作者：
V. Vinokur
中科院分区：
文献类型：
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作者：
A. Gurevich;V. Vinokur
我们用多组分序参量预言了载流超导体的一个新的动力学态。如果电流密度J超过临界值J（t），则发生由非平衡准粒子的电荷不平衡引起的带间击穿。当J>J（t）时，从电流引线中穿过的电场引起各种静态和动态孤子相位织构，以及类似于非定常约瑟夫森效应的电压振荡。我们提出实验来观察这些影响，这将探测超导序参量的多组分性质。
We predict a new dynamic state in current-carrying superconductors with a multicomponent order parameter. If the current density J exceeds a critical value J(t), an interband breakdown caused by charge imbalance of nonequilibrium quasiparticles occurs. For J>J(t), the electric field penetrating from current leads gives rise to various static and dynamic soliton phase textures, and voltage oscillations similar to the nonstationary Josephson effect. We propose experiments to observe these effects which would probe the multicomponent nature of the superconducting order parameter.