Portal de Periódicos da CAPES

Observation of surface superconductivity above the thermodynamic critical field in type I superconductors

1964; Elsevier BV; Volume: 9; Issue: 3 Linguagem: Francês

10.1016/0031-9163(64)90052-6

1873-2410

Bruce Rosenblum, M. Cardona,

Magnetic properties of thin films

Critical surface field of Pb films has been measured by means of an high sensitivity differential technique. Satisfactory agreement is found with the Saint-James-de Gennes theory extended to films. The onset of surface superconductivity has been investigated in the range between the reduced temperature t from 0.51 to 0.99.On a mésuré le champ magnetique critique de plusiers films de Pb avec la tecnique de derivation. On a obtenu un accord satisfaisant avec la théorie de Saint-James et de Gennes appliée aux films. L'apparition de la superconductivité de surface a eté étudiée dans la région de température réduite de la valeur 0.51 à la valeur 0.99.