Proximity effects in ferromagnet/superconductor structures

✍ Scribed by H.L. Yu; G.Y. Sun; L.Y. Yang; D.Y. Xing

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 382 KB
• Volume: 402
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2003.09.065

✦ Synopsis

The Nambu spinor GreenÕs function approach is applied to study proximity effects in ferromagnet/superconductor (FM/SC) structures. They include the induced superconducting order parameter and density of states (DOS) with superconducting feature on the FM side, and spin-dependent DOS within the energy gap on the SC side. The latter indicates an appearance of gapless superconductivity and a coexistence of ferromagnetism and superconductivity in a small regime near the interface. The influence of exchange energy in FM and barrier strength at interface on the proximity effects is discussed.