Speaker
Bernd Aichner
(Faculty of Physics, University of Vienna)
Description
Exploring strongly interacting engineered vortex patterns in copper-oxide superconductors requires vortex distances smaller than the London penetration depth. With the focused beam of a helium ion microscope, we fabricate pinning sites with spacings down to 40 nm in YBa2Cu3O7−𝛿 thin films and investigate vortex commensurability effects at unprecedented high magnetic fields at the order of 1 T. In quasi-kagomé tilings, magnetic caging of vortices is observed and confirmed by molecular dynamic simulations of vortex motion. These findings open the path for the realization of even more complex structures and intriguing possibilities for the manipulation of vortices in high-temperature superconductors.
Primary author
Bernd Aichner
(Faculty of Physics, University of Vienna)
Co-authors
Max Karrer
(Physikalisches Institut and Center for Quantum Science (CQ) in LISA+, Universität Tübingen)
Katja Wurster
(Physikalisches Institut and Center for Quantum Science (CQ) in LISA+, Universität Tübingen)
Lucas Backmeister
(Faculty of Physics, University of Vienna)
Vyacheslav Misko
(Department of Physics, Universiteit Antwerpen; Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama, Japan)
Meirzhan Dosmailov
(Institute of Applied Physics, Johannes Kepler University Linz)
Johannes Pedarnig
(Institute of Applied Physics, Johannes Kepler University Linz)
Franco Nori
(Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama, Japan; Physics Department, University of Michigan)
Reinhold Kleiner
(Physikalisches Institut and Center for Quantum Science (CQ) in LISA+, Universität Tübingen)
Edward Goldobin
(Physikalisches Institut and Center for Quantum Science (CQ) in LISA+, Universität Tübingen)
Dieter Koelle
(Physikalisches Institut and Center for Quantum Science (CQ) in LISA+, Universität Tübingen)
Wolfgang Lang
(Faculty of Physics, University of Vienna)
