首页> 外文期刊>Physica, B. Condensed Matter >Vortex dynamics in organic superconductor kappa-(ET)(2)X (X = Cu(NCS)(2), Cu[N(CN)(2)]Br)
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Vortex dynamics in organic superconductor kappa-(ET)(2)X (X = Cu(NCS)(2), Cu[N(CN)(2)]Br)

机译:有机超导体kappa-(ET)(2)X中的涡旋动力学(X = Cu(NCS)(2),Cu [N(CN)(2)] Br)

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Organic superconductors K-(ET)(2)X (X = Cu(NCS)(2), Cu[N(CN)(2)]Br) show anomalous elastic properties in both normal and superconducting states. We have measured the sound velocity of these salts near the superconducting transition temperature T-c in the selected magnetic fields with different directions. Under the magnetic field, the sound velocity as a function of temperature shows remarkable elastic anomalies. It was mainly caused by interplay between the vortices and the elastic strain. The Delta CS-N, which is the difference of elastic constant C(T) in the superconducting state from the nornial state, shows the softening toward lower temperature after following the jump at T-c. This discontinuous jump at T-c has been found oil the longitudinal mode and on the transverse mode. It suggests that two-dimensional order parameter plays ail important role in the Superconductivity of K-(ET)(2)X system. (c) 2006 Elsevier B.V. All rights reserved.
机译:有机超导体K-(ET)(2)X(X = Cu(NCS)(2),Cu [N(CN)(2)] Br)在正常和超导状态下均显示异常弹性。我们已经在不同方向的选定磁场中测量了这些盐在超导转变温度T-c附近的声速。在磁场下,声速随温度的变化表现出明显的弹性异常。这主要是由涡旋和弹性应变之间的相互作用引起的。 δCS-N是超导状态下弹性常数C(T)与标准态之间的差,它在T-c处跃变后显示出向较低温度的软化。在纵向模式和横向模式中发现了T-c处的这种不连续跳跃。这表明二维有序参数在K-(ET)(2)X系统的超导性中起着重要的作用。 (c)2006 Elsevier B.V.保留所有权利。

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