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Parallel magnetic field suppresses dissipation in superconducting nanostrips.
Wang, Yong-Lei; Glatz, Andreas; Kimmel, Gregory J; Aranson, Igor S; Thoutam, Laxman R; Xiao, Zhi-Li; Berdiyorov, Golibjon R; Peeters, François M; Crabtree, George W; Kwok, Wai-Kwong.
Afiliación
  • Wang YL; Materials Science Division, Argonne National Laboratory, Argonne, IL 60439.
  • Glatz A; Department of Physics, University of Notre Dame, Notre Dame, IN 46556.
  • Kimmel GJ; Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China.
  • Aranson IS; Materials Science Division, Argonne National Laboratory, Argonne, IL 60439.
  • Thoutam LR; Department of Physics, Northern Illinois University, DeKalb, IL 60115.
  • Xiao ZL; Materials Science Division, Argonne National Laboratory, Argonne, IL 60439.
  • Berdiyorov GR; Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL 60208.
  • Peeters FM; Materials Science Division, Argonne National Laboratory, Argonne, IL 60439.
  • Crabtree GW; Department of Biomedical Engineering, Pennsylvania State University, University Park, PA 16802.
  • Kwok WK; Materials Science Division, Argonne National Laboratory, Argonne, IL 60439.
Proc Natl Acad Sci U S A ; 114(48): E10274-E10280, 2017 11 28.
Article en En | MEDLINE | ID: mdl-29133405
The motion of Abrikosov vortices in type-II superconductors results in a finite resistance in the presence of an applied electric current. Elimination or reduction of the resistance via immobilization of vortices is the "holy grail" of superconductivity research. Common wisdom dictates that an increase in the magnetic field escalates the loss of energy since the number of vortices increases. Here we show that this is no longer true if the magnetic field and the current are applied parallel to each other. Our experimental studies on the resistive behavior of a superconducting Mo0.79Ge0.21 nanostrip reveal the emergence of a dissipative state with increasing magnetic field, followed by a pronounced resistance drop, signifying a reentrance to the superconducting state. Large-scale simulations of the 3D time-dependent Ginzburg-Landau model indicate that the intermediate resistive state is due to an unwinding of twisted vortices. When the magnetic field increases, this instability is suppressed due to a better accommodation of the vortex lattice to the pinning configuration. Our findings show that magnetic field and geometrical confinement can suppress the dissipation induced by vortex motion and thus radically improve the performance of superconducting materials.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Proc Natl Acad Sci U S A Año: 2017 Tipo del documento: Article Pais de publicación: Estados Unidos