Theoretical considerations on the superconductor-ferromagnet transition region (invited)

Journal Article · Sun Mar 01 04:00:00 EST 1981 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.328867· OSTI ID:5928205

Blount, E I

We consider the effects of competing ferromagnetic and superconducting order parameters, specifically, in the regime where the exchange interaction between localized spins and conduction electrons is quite weak. This permits superconductivity to survive a high concentration of spins, and results in a weakened RKKY interaction between spins. There is then an important role for the long-range dipolar interaction, mediated by the magnetic field B. Working in mean-field theory, we find that there are at least five possible phases. There are, besides the pure superconductor and ferromagnet, state in which superconductivity survives with coexisting magnetization which may be periodic and linearly or circularly polarized, or concentrated in vortices.

• Research Organization: Bell Laboraries, Murray Hill, New Jersey 07940
• OSTI ID: 5928205
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:3; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANGULAR MOMENTUM
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXCHANGE INTERACTIONS
FERROMAGNETIC MATERIALS
FERROMAGNETISM
INTERACTIONS
MAGNETIC MATERIALS
MAGNETISM
MATERIALS
ORDER PARAMETERS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SPIN
SUPERCONDUCTIVITY
SUPERCONDUCTORS