论文标题
在二维拓扑半学W2N3中，声子介导的超导率的预测高临界温度
Prediction of phonon-mediated superconductivity with high critical temperature in the two-dimensional topological semimetal W2N3
论文作者
论文摘要
二维超导体对其基本物理及其潜在应用引起了极大的兴趣，尤其是在快速增长的量子计算领域。尽管有强烈的理论和实验性工作，但过渡温度相当高的材料仍然很少见。更罕见的是，那些将超导性与非平凡的带拓扑结合在一起的人，与Majorana Fermions等物质的外来状态相结合。在这里，我们预测在易于去角质的，拓扑的2D半含量W2N3中，在易于去角质的21-28 K的超导临界温度非常高。通过研究其电子和超导性特性是掺杂和应变的函数，我们发现了电子 - 光子相互作用的巨大变化，使该材料成为研究不同耦合方案并测试当前超导性理论的独特平台。最后，我们讨论了调整材料以实现超导性和拓扑非平凡边缘状态共存的可能性。
Two-dimensional superconductors attract great interest both for their fundamental physics and for their potential applications, especially in the rapidly growing field of quantum computing. Despite intense theoretical and experimental efforts, materials with a reasonably high transition temperature are still rare. Even more rare are those that combine superconductivity with a non-trivial band topology, to potentially host exotic states of matter such as Majorana fermions. Here, we predict a remarkably high superconducting critical temperature of 21-28 K in the easily exfoliable, topologically non-trivial 2D semimetal W2N3 . By studying its electronic and superconducting properties as a function of doping and strain, we find large changes in the electron-phonon interactions that make this material a unique platform to study different coupling regimes and test the limits of current theories of superconductivity. Last, we discuss the possibility of tuning the material to achieve coexistence of superconductivity and topologically non-trivial edge states.
