Controlling Superconductivity via Tunable Nanostructure Arrays
- Univ. of Illinois at Urbana-Champaign, IL (United States)
This report describes the research accomplished under the award topic of “Controlling Superconductivity via Tunable Nanostructure Arrays.” Under this program, proximity-coupled nanostructure arrays were experimentally and theoretically studied, to understand and control how collective behavior emerges in superconducting systems. The outcome of this research was the discovery and characterization of exotic phases in superconducting systems, a better understanding of how microscopic parameters lead to macroscopic behavior in key materials systems, and an improved ability to control interactions to manipulate the electronic properties of superconductors. The program was based on the idea that superconducting islands placed on a thin conductor at a separation smaller than the normal metal coherence length can support a finite Josephson coupling between the islands, where the strength of the coupling depends on the length and conductance of the intervening material. By adjusting the size, configuration, and type of islands, the correlated states, as well as the competition between them, were precisely tuned. This allowed for the clear determination of how superconductors’ critical properties, such as fundamental vortex dynamics, can be controlled.
- Research Organization:
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- DOE Contract Number:
- SC0012649
- OSTI ID:
- 1512487
- Report Number(s):
- DOE-ILLINOIS-0012649
- Resource Relation:
- Related Information: 1. H. Polshyn, T. Naibert, and R. Budakian, “Imaging phase-slip dynamics in superconducting rings by stochastic resonance magnetic force microscopy,” Phys. Rev. B, 97, 184501 (2018).2. S.T. Gill, J. Damasco, B.E. Janicek, M.S. Durkin, V. Humbert, S. Gazibegovic, D. Car, E.P.A.M. Bakkers, P.Y. Huang and N. Mason, “Selective-Area Superconductor Epitaxy to Ballistic Semiconductor Nanowires,” Nano Letters 18, 6121 (2018).3. Malcolm Durkin, Ian Mondragon-Shem, Serena Eley, Taylor L. Hughes, and Nadya Mason, “History-dependent dissipative vortex dynamics in superconducting arrays,” Phys. Rev. B 94, 024510 (2016).4. A. Kogar, S. Vig, A. Thaler, M.H. Wong, Y. Xiao, D. Reig-i-Plessis, G.Y. Cho, T. Valla, Z. Pan, J. Schneeloch, R. Zhong, G. Gu, T.L. Hughes, G.J. MacDougall, T.-C. Chiang, P. Abbamonte, “Surface collective modes in the topological insulators Bi2Se3 and Bi0.5Sb1.5Te3−xSex,” Phys. Rev. Lett. 115, 257402 (2015).5. M. Durkin, S. Gopalakrishnan, R.Garrido-Menacho, J. Zuo, and N. Mason, “Rare-region onset of superconductivity,” submitted Phys. Rev. B, April 2019 (arXiv:1607.06842).6. T. Naibert, H. Polshyn, M. Durkin, B. Wolin, R.G. Menacho, V. Chua, I.M. Shem, T.L. Hughes, N. Mason, and R. Budakian, “-Magnetic force microscopy for imaging and control of vortex dynamics,” to be submitted, June 2019 (arXiv:1705.08956).7. M. Durkin, Ian Mondragon-Shem, Taylor L. Hughes, and Nadya Mason, “Observation of domain wall motion in a polycrystalline vortex lattice,” to be submitted, June 2019 (arXiv:1708.03082).
- Country of Publication:
- United States
- Language:
- English
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