Zerba Caterina, Kuhlenkamp Clemens, Imamoğlu Ataç, Knap Michael
<a href="https://ror.org/02kkvpp62">Technical University of Munich</a>, TUM School of Natural Sciences, Physics Department, 85748 Garching, Germany.
<a href="https://ror.org/04xrcta15">Munich Center for Quantum Science and Technology (MCQST)</a>, Schellingstrasse 4, 80799 München, Germany.
Phys Rev Lett. 2024 Aug 2;133(5):056902. doi: 10.1103/PhysRevLett.133.056902.
Heterostructures of two-dimensional transition metal dichalcogenides are emerging as a promising platform for investigating exotic correlated states of matter. Here, we propose to engineer Bose-Fermi mixtures in these systems by coupling interlayer excitons to doped charges in a trilayer structure. Their interactions are determined by the interlayer trion, whose spin-selective nature allows excitons to mediate an attractive interaction between charge carriers of only one spin species. Remarkably, we find that this causes the system to become unstable to topological p+ip superconductivity at low temperatures. We then demonstrate a general mechanism to develop and control this unconventional state by tuning the trion binding energy using a solid-state Feshbach resonance.
二维过渡金属二硫属化物的异质结构正成为研究奇异相关物质态的一个有前景的平台。在此，我们提议通过将层间激子与三层结构中的掺杂电荷耦合，在这些系统中构建玻色-费米混合物。它们的相互作用由层间三重激子决定，其自旋选择性使得激子仅在一种自旋种类的电荷载流子之间介导吸引相互作用。值得注意的是，我们发现这会导致系统在低温下对拓扑p+ip超导变得不稳定。然后我们展示了一种通用机制，通过利用固态费什巴赫共振调节三重激子结合能来产生和控制这种非常规状态。
