Navegação Ciências Exatas e da Terra por Assunto "Supercondutores granulares"
Resultados 1-3 de 3
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Correlation between the magnetic irreversibility limit and the zero resistance point in different granular YBa/sub 2/Cu/sub 3/O/sub 7-σ superconductors
(2008) [Artigo de periódico]We report on magnetization and magnetoresistance measurements of single-crystal, melt-processed, and polycrystalline YBa2Cu3O7− samples with the purpose of disclosing the connection between the magnetic irreversibility ... -
Granular superconductivity ina Ca-doped YBa/sub 2/Cu/sub 3/O/sub 7-σ single crystal : role of divalent impurities and the effect of applied field on the grain coupling
(2007) [Artigo de periódico]We investigate the effect of the divalent Ca atoms at the trivalent Y site of YBa2Cu3O7−δ on the magnetoconductivity and magnetic irreversibility of single crystals and a polycrystalline sample. The magnetic irreversibility ... -
Superconducting properties and electron scattering mechanisms in a Nb film with a single weak-link excavated by focused ion beam
(2021) [Artigo de periódico]Granularity is one of the main features restricting the maximum current which a superconductor can carry without losses, persisting as an important research topic when applications are concerned. To directly observe its ...