Proximity-induced collective modes in an unconventional superconductor heterostructure
Proximity-induced collective modes in an unconventional superconductor heterostructure
复制标题
DOI：
10.1103/physrevb.106.064508
复制
发表时间：
2022-01
影响因子：
3.7
通讯作者：
J. Curtis;N. R. Poniatowski;A. Yacoby;P. Narang
中科院分区：
文献类型：
--
作者：
J. Curtis;N. R. Poniatowski;A. Yacoby;P. Narang
在量子技术和设备中的潜在应用，非常规的挑战是与探测和候选材料相关的各种挑战。 - 具有固有d波的样本中的波间隙会导致形成的准粒子对形成，在d波通道中表现为一个集体模式，这是一个可以在整个模式的cloodersive systerments systerments systerments systerments syperens中逐步研究的方法。 Metry打破超导性。因此，我们的建议还允许创建和研究这些难以捉摸的非常规国家。
Unconventional superconductors have been long sought for their potential applications in quantum technologies and devices. A key challenge impeding this effort is the difficulty associated with probing and characterizing candidate materials and establishing their order parameter. In this Letter , we present a platform that allows us to spectroscopically probe unconventional superconductivity in thin-layer materials via the proximity effect. We show that inducing an s -wave gap in a sample with an intrinsic d -wave instability leads to the formation of bound-states of quasiparticle pairs, which manifest as a collective mode in the d -wave channel. This finding provides a way to study the underlying pairing interactions vicariously through the collective mode spectrum of the system. Upon further cooling of the system we observe that this mode softens considerably and may even condense, signaling the onset of time-reversal symmetry breaking superconductivity. Therefore, our proposal also allows for the creation and study of these elusive unconventional states.