Superconductors that do not expel magnetic flux

  title={Superconductors that do not expel magnetic flux},
  author={Y. Tanaka and Hirotake Yamamori and Takashi Yanagisawa and Taichiro Nishio and Shunichi Arisawa},
An ultrathin superconducting bilayer creates a coreless fractional vortex when only the second layer has a hole. The quantization is broken by the hole, and the normal core disappears. The magnetic flux is no longer confined near the normal core, and its density profile around the hole becomes similar to that of a crème caramel; the divergence of the magnetic flux density is truncated around the center. We propose basic design of a practical device to realize a coreless fractional vortex. 

Figures from this paper


Phase diagram of planar U(l) x U(l) superconductor - Condensation of vortices with fractional flux and a superfluid state
We discuss a phase diagram of two-dimensional U(1) x U(l) superconductor in the field theoretic formalizm of [Phys. Rev. Lett. 89 (2002) 067001]. In particular we discuss that when penetration leng
Current-induced massless mode of the interband phase difference in two-band superconductors
Abstract There is a current-induced massless mode of an interband phase difference in two-band superconductors. For a thin wire, the externally applied current always invokes a finite interband phase
Anomalous AC Susceptibility Response of (Cu,C)Ba2Ca2Cu3Oy: Experimental Indication of Two-Component Vortex Matter in Multi-Layered Cuprate Superconductors
We have measured the AC susceptibility response in field-cooling conditions of (Cu,C)Ba2Ca2Cu3Oy with aligned crystallites. In a certain but large range of the applied DC magnetic field, the
  • Rev. Lett. 98
  • 2007
  • Matter 26
  • 2014
an analogy between two worlds
  • T. Yanagisawa. in Recent Advances in Quarks Research. ed. H Fujikage and K Hyobanshi
  • 2013
role of the proximity effect
  • V Vakaryuk, V Stanev, WC Lee, A Levchenko. Phys. Rev. Lett. 109
  • 2012
Influence of Josephson and magnetic coupling
  • R. Geurts, M. V. Milošević, F. M. Peeters. Phys. Rev. B 81
  • 2010
  • Ser. 97
  • 2009
Explusion of current from the plasma interior
  • S. M. Mahajan. Phys. Rev. Lett. 100
  • 2008