Petrović A P, Raju M, Tee X Y, Louat A, Maggio-Aprile I, Menezes R M, Wyszyński M J, Duong N K, Reznikov M, Renner Ch, Milošević M V, Panagopoulos C
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore.
Department of Physics, Technion, Haifa 32000, Israel.
Phys Rev Lett. 2021 Mar 19;126(11):117205. doi: 10.1103/PhysRevLett.126.117205.
We report experimental coupling of chiral magnetism and superconductivity in [IrFeCoPt]/Nb heterostructures. The stray field of skyrmions with radius ≈50 nm is sufficient to nucleate antivortices in a 25 nm Nb film, with unique signatures in the magnetization, critical current, and flux dynamics, corroborated via simulations. We also detect a thermally tunable Rashba-Edelstein exchange coupling in the isolated skyrmion phase. This realization of a strongly interacting skyrmion-(anti)vortex system opens a path toward controllable topological hybrid materials, unattainable to date.
我们报道了在[铱铁钴铂]/铌异质结构中手性磁性与超导性的实验耦合。半径约为50纳米的斯格明子的杂散场足以在25纳米厚的铌薄膜中形成反涡旋，在磁化强度、临界电流和磁通动力学方面具有独特特征，这一点通过模拟得到了证实。我们还在孤立的斯格明子相中检测到了热可调的 Rashba-Edelstein 交换耦合。这种强相互作用的斯格明子 - （反）涡旋系统的实现为可控拓扑混合材料开辟了一条道路，这是迄今为止无法实现的。
