Naibert, Tyler R.; Polshyn, HryhoriyISTA ; Garrido-Menacho, Rita; Durkin, Malcolm; Wolin, Brian; Chua, Victor; Mondragon-Shem, Ian; Hughes, Taylor; Mason, Nadya; Budakian, Raffi
Harnessing the properties of vortices in superconductors is crucial for fundamental science and technological applications; thus, it has been an ongoing goal to locally probe and control vortices. Here, we use a scanning probe technique that enables studies of vortex dynamics in superconducting systems by leveraging the resonant behavior of a raster-scanned, magnetic-tipped cantilever. This experimental setup allows us to image and control vortices, as well as extract key energy scales of the vortex interactions. Applying this technique to lattices of superconductor island arrays on a metal, we obtain a variety of striking spatial patterns that encode information about the energy landscape for vortices in the system. We interpret these patterns in terms of local vortex dynamics and extract the relative strengths of the characteristic energy scales in the system, such as the vortex-magnetic field and vortex-vortex interaction strengths, as well as the vortex chemical potential. We also demonstrate that the relative strengths of the interactions can be tuned and show how these interactions shift with an applied bias. The high degree of tunability and local nature of such vortex imaging and control not only enable new understanding of vortex interactions, but also have potential applications in more complex systems such as those relevant to quantum computing.
Physical Review B
This work was supported by the Department of Energy (DOE) Basic Energy Sciences under Grant No. DE-SC0012649 and the National Science Foundation (NSF) under Grant No. DMR 17-10437. V.C. was supported by the Gordon and Betty Moore Foundation EPiQS Initiative through Grant No. GBMF4305. N.M. also acknowledges support from DOE-EFRC under Grant No. DE-SC0021238 for analysis/manuscript preparation. This research was carried out in part in the Materials Research Laboratory Central Research Facilities, University of Illinois.
Naibert TR, Polshyn H, Garrido-Menacho R, et al. Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. Physical Review B. 2021;103(22). doi:10.1103/physrevb.103.224526
Naibert, T. R., Polshyn, H., Garrido-Menacho, R., Durkin, M., Wolin, B., Chua, V., … Budakian, R. (2021). Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. Physical Review B. American Physical Society. https://doi.org/10.1103/physrevb.103.224526
Naibert, Tyler R., Hryhoriy Polshyn, Rita Garrido-Menacho, Malcolm Durkin, Brian Wolin, Victor Chua, Ian Mondragon-Shem, Taylor Hughes, Nadya Mason, and Raffi Budakian. “Imaging and Controlling Vortex Dynamics in Mesoscopic Superconductor-Normal-Metal-Superconductor Arrays.” Physical Review B. American Physical Society, 2021. https://doi.org/10.1103/physrevb.103.224526.
T. R. Naibert et al., “Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays,” Physical Review B, vol. 103, no. 22. American Physical Society, 2021.
Naibert TR, Polshyn H, Garrido-Menacho R, Durkin M, Wolin B, Chua V, Mondragon-Shem I, Hughes T, Mason N, Budakian R. 2021. Imaging and controlling vortex dynamics in mesoscopic superconductor-normal-metal-superconductor arrays. Physical Review B. 103(22), 224526.
Naibert, Tyler R., et al. “Imaging and Controlling Vortex Dynamics in Mesoscopic Superconductor-Normal-Metal-Superconductor Arrays.” Physical Review B, vol. 103, no. 22, 224526, American Physical Society, 2021, doi:10.1103/physrevb.103.224526.