Title: Thermoelectric AC Josephson effect Show Chinese title

Title: 热电AC约瑟夫森效应

Abstract: A temperature gradient ${\Delta}T$ across a Josephson junction induces a thermoelectric current. We predict the AC Josephson effect is activated when this current surpasses the junction's critical current. Our investigation of this phenomenon employs the time-dependent Ginzburg-Landau theory framework in proximity to the critical temperature. Our results indicate that the frequency of the AC current is approximately given by ${\pi} S {\Delta} T / (2 {\Phi}_0)$, where $S$ represents the Seebeck coefficient and ${\Phi}_0$ the magnetic flux quantum and we estimate the frequency be on the range of GHz for Sn up to a THz for larger $S$ and $T_c$ materials. Furthermore, we propose two distinct experimental configurations to observe this effect. Show Chinese abstract

Abstract: 一个跨过约瑟夫森结的温度梯度${\Delta}T$会诱导出热电动势电流。 我们预测当这个电流超过结点的临界电流时，交流约瑟夫森效应会被激活。 我们利用接近临界温度的时变 Ginsburg-Landau 理论框架来研究这一现象。 我们的结果显示交流电流的频率大约由${\pi} S {\Delta} T / (2 {\Phi}_0)$给出，其中$S$表示赛贝克系数，${\Phi}_0$表示磁通量子，我们估计频率在 Sn 材料中处于 GHz 范围，而对于更大的$S$和$T_c$材料则可达 THz。 此外，我们提出了两种不同的实验构型以观测此效应。