Critical behavior at a dynamic vortex insulator-to-metal transition

• Autores: Nicola Poccia, Tatyana I. Baturina, Francesco Coneri
• Localización: Science, ISSN 0036-8075, Vol. 349, Nº 6253, 2015, págs. 1202-1205
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • An array of superconducting islands placed on a normal metal film offers a tunable realization of nanopatterned superconductivity. This system enables investigation of the nature of competing vortex states and phase transitions between them. A square array creates the eggcrate potential in which magnetic field–induced vortices are frozen into a vortex insulator. We observed a vortex insulator–vortex metal transition driven by the applied electric current and determined critical exponents that coincided with those for thermodynamic liquid-gas transition. Our findings offer a comprehensive description of dynamic critical behavior and establish a deep connection between equilibrium and nonequilibrium phase transitions.