Triplet superconducting proximity effect in nonhomogeneous magnetic materials

• Published in: Физика низких температур
• Date: 2001
• Main Authors: Kadigrobov, A., Shekhter, R.I., Jonson, M.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2001
• Subjects: Статьи, посвященные столетию со дня рождения Л. В. Шубникова
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/129004
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Triplet superconducting proximity effect in nonhomogeneous magnetic materials / 
 
 A. Kadigrobov, R.I. Shekhter, M. Jonson // Физика низких температур. — 2001. — Т. 27, № 9-10. — С. 1030-1038. — Бібліогр.: 24. назв. — англ.

We show that quantum spin fluctuations in inhomogeneous conducting ferromagnets 
 
 drastically affect the Andreev reflection of electrons and holes at a ferromagnet-
 
 superconductor interface. As a result, a strong long-range proximity effect appears, 
 
 associated with electron-hole spin triplet correlations and persisting on a length scale 
 
 typical for nonmagnetic materials but anomalously large for ferromagnets. For applications, 
 
 an important consequence is that this long-range proximity effect permits to create 
 
 superconducting quantum intetference devices with the Josephson magnetic junction of an 
 
 anomalous large length.