Transition temperatures of superconductor-ferromagnet superlattices

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.759· OSTI ID:5661824

Radovic, Z ^[1]; Ledvij, M; Dobrosavljevic-Grujic, L ^[2]; Buzdin, A I ^[3]; Clem, J R ^[4]

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1. Department of Physics, University of Belgrade, P.O. Box 550, 11001 Belgrade, Yugoslavia (YU)
2. Institute of Physics, P.O. Box 57, 11001 Belgrade, (Yugoslavia)
3. Physics Department, Moscow State University, Moscow, (U.S.S.R.)
4. Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011 (USA)

The transition temperature {ital T}{sub {ital c}} of superconductor-ferromagnet superlattices is calculated by solving exactly the Usadel equations. Characteristic ground-state configurations are predicted with nontrivial phase difference 0{lt}{ital cphi}{le}{pi} between neighboring superconducting layers. An unusual oscillatory dependence of {ital T}{sub {ital c}} on the ferromagnetic-layer thickness is obtained. For short-period superlattices it is found that the transition changes from second to first order. A comparison of theoretical results with experimental data for V/Fe superlattices is given.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5661824
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 44:2; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTING FILMS
TRANSITION TEMPERATURE
CALCULATION METHODS
ELECTRIC CONDUCTIVITY
FERROMAGNETIC MATERIALS
IRON
PROXIMITY EFFECT
SUPERLATTICES
VALIDATION
VANADIUM
ELECTRICAL PROPERTIES
ELEMENTS
FILMS
MAGNETIC MATERIALS
MATERIALS
METALS
PHYSICAL PROPERTIES
TESTING
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS
656100* - Condensed Matter Physics- Superconductivity