Squeezed Abrikosov-Josephson Vortex in Atomic-Layer Pb Superconductors Formed on Vicinal Si(111) Substrates
Yudai Sato, Masahiro Haze, Ryohei Nemoto, Wenxuan Qian, Shunsuke Yoshizawa, Takashi Uchihashi, Yukio Hasegawa
DOI 10.1103/PhysRevLett.130.106002 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Unlike bulk counterparts, two-dimensional (2D) superconductors are sensitive to disorder. Here, we investigated superconductivity of Pb atomic layers formed on vicinal substrates to reveal how surface steps with an interval shorter than the coherence length ξ affect it. Electrical transport showed reduced critical temperature and enhanced critical magnetic field. Scanning tunneling microscopy exhibited vortices elongated along the steps, that is, Abrikosov-Josephson vortices squeezed normal to the steps due to the reduced ξ. These results demonstrate that steps work as disorder and vicinal substrates provide a unique platform to manipulate the degree of disorder on 2D superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.51 | Pressure not reported | unknown |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.21 | Pressure not reported | unknown |
Similar papers
Dense single-atomic 14×3-reconstructed Pb layer on Si(111): Structural and superconducting properties
similarity 0.92L. V. Bondarenko et al.
Source status unknown — claims are unverified
Anisotropic vortex pinning in superconductors with a square array of rectangular submicron holes
similarity 0.91L. Van Look et al.
Source status unknown — claims are unverified
Resistive transitions in ultrathin superconducting films: Possible evidence for quantum tunneling of vortices
similarity 0.91Y. Liu et al.
Source status unknown — claims are unverified
Experimental study of the interaction of fluxons with an Abrikosov vortex in a long Josephson junction
similarity 0.91A. V. Ustinov et al.
Source status unknown — claims are unverified
High-frequency vortex ratchet effect in a superconducting film with a nanoengineered array of asymmetric pinning sites
similarity 0.91B. B. Jin et al.
Source status unknown — claims are unverified
Superconductor-insulator transition in ultrathin Pb films: Localization and superconducting coherence
similarity 0.90K. Kagawa et al.
Source status unknown — claims are unverified