Navegação Ciências Exatas e da Terra por Assunto "Condução por salto"

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    • A simple formulation for magnetoresistance in metal-insulator granular films with increased current 

      Boff, Marco Aurelio Silveira; Canto, B.; Baibich, Mario Norberto; Pereira, Luis Gustavo (2013) [Artigo de periódico]
      We studied the tunnel magnetoresistance in metal/insulator granular films when the applied current is varied. The tunnel magnetoresistance shows a strong modification related to a non-Ohmic behaviour of theses materials. ...

    • Turn on of new electronic paths in Fe-SiO2 granular thin film 

      Boff, Marco Aurelio Silveira; Hinrichs, Ruth; Canto, B.; Mesquita, Fabiano; Baptista, Daniel Lorscheitter; Fraga, Gilberto Luiz Ferreira (2014) [Artigo de periódico]
      The electrical properties of Fe-SiO2 have been studied in the low-field regime (eDV kBT), varying the injected current and the bias potential. Superparamagnetism and a resistance drop of 4400X (for a voltage variation of ...