论文标题
超导nbse $ _2 $的负电阻状态由表面声波诱导
Negative resistance state in superconducting NbSe$_2$ induced by surface acoustic waves
论文作者
论文摘要
我们报告了在表面声波的辐射下（锯）的NBSE $ _2 $薄膜的超导间隙（锯）的超导间隙（锯）的超导间隙，沿当前流动的相反方向呈负电阻。负电阻的幅度通过增加锯功率和降低温度而变得更大。作为一种可能的情况，我们提出，在锯中调制的NBSE $ _2 $的电荷密度波中的孤子 - 抗溶剂对，在超导状态下用作时间依赖的电容，从而导致直流负电阻。目前的实验结果将提供一种先前未开发的方法来检查超导性的非平衡操纵。
We report a negative resistance, namely, a voltage drop along the opposite direction of a current flow, in the superconducting gap of NbSe$_2$ thin films under the irradiation of surface acoustic waves (SAWs). The amplitude of the negative resistance becomes larger by increasing the SAW power and decreasing temperature. As one possible scenario, we propose that soliton-antisoliton pairs in the charge density wave of NbSe$_2$ modulated by the SAW serve as a time-dependent capacitance in the superconducting state, leading to the dc negative resistance. The present experimental result would provide a previously unexplored way to examine nonequilibrium manipulation of the superconductivity.
