Transport properties of YBa2Cu3O7−σ/ferromagnetic interfaces

✍ Scribed by Nir Hass; M. Covington; W.L. Feldmann; L.H. Greene; Mark Johnson

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 162 KB
• Volume: 235-240
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(94)92174-1

✦ Synopsis

The transport properties of YBa2Cu3OT.dpermaUoy interfaces as a function of temperature and small magnettc fields are presented. High quality (001) and (100) oriented YBa2Cu3OT.~ (YBCO) thin films are prepared by the off-axis sputtering technique. Permalloy (Ni0 sFe02) films are then deposited on top of the YBCO films, and patterned in order to obtain sub-millimeter contacts. The interface resistances in the normal and superconducting state of the YBCO are measured as a function of an applied magnetic field. The results are discussed in the framework of electron spin transport across the interface and spin diffusion in the bulk of the superconductor.