Now showing items 1-4 of 4

    • Anisotropic thermomagnetic avalanche activity in field-cooled superconducting films 

      Colauto, Fabiano; Carmo, Danusa do; Andrade, Antonio Marcos Helgueira de; Oliveira, Ana Augusta Mendonça de; Ortiz, Wilson Aires; Johansen, Tom Henning (2017) [Journal article]
      The electrodynamic behavior of isotropic superconducting Nb films cooled below their critical temperature in the presence of in-plane applied magnetic fields is investigated using magneto-optical imaging. A specially ...
    • Cascade dynamics of thermomagnetic avalanches in superconducting films with holes 

      Vestgården, Jørn Inge; Colauto, Fabiano; Andrade, Antonio Marcos Helgueira de; Oliveira, Ana Augusta Mendonça de; Ortiz, Wilson Aires; Johansen, Tom Henning (2015) [Journal article]
      The submicrosecond dynamics of thermomagnetic avalanches in superconducting films with nonconducting holes (antidots) is considered.When such an avalanche reaches a hole, it is quickly filled with magnetic flux, and often ...
    • Limiting thermomagnetic avalanches in superconducting films by stop-holes 

      Colauto, Fabiano; Vestgården, Jørn Inge; Andrade, Antonio Marcos Helgueira de; Oliveira, Ana Augusta Mendonça de; Ortiz, Wilson Aires; Johansen, Tom Henning (2013) [Journal article]
      It is demonstrated that circular holes in superconducting films of Nb can arrest the propagation of thermomagnetic avalanches. The effect was found over a range of temperatures where the material is susceptible to this ...
    • Spin texture on top of flux avalanches in Nb/Al2O3/Co thin film heterostructures 

      Lopes, Rovan Fernandes; Carmo, Danusa do; Colauto, Fabiano; Ortiz, Wilson Aires; Andrade, Antonio Marcos Helgueira de; Johansen, Tom Henning; Baggio-Saitovitch, E.; Pureur Neto, Paulo (2017) [Journal article]
      We report on magneto-optical imaging, magnetization, Hall effect, and magneto-resistance experiments in Nb/Al2O3/Co thin film heterostructures. The magneto-transport measurements were performed in samples where electrical ...