Investigation of the magnitude and range of the Ruderman-Kittel interaction in SmRh/sub 4/B/sub 4/ and ErRh/sub 4/B/sub 4/

Journal Article · Mon May 13 04:00:00 EDT 1985 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.54.2143· OSTI ID:5672551

Terris, B D; Gray, K E; Dunlap, B D

The superconductive and magnetic transitioin temperatures taken together are shown to provide a unique probe which separately determines both the magnitude and range of the Ruderman-Kittel interaction in the RRh/sub 4/B/sub 4/ magnetic superconductors (R = Er, Sm). Experimentally, an unexpected peak is found in the antiferromagnetic-ordering temperature of SmRn/sub 4/B/sub 4/ versus electron mean free path, while for ErRh/sub 4/B/sub 4/ the ferromagnetic-ordering temperature decreases monotonically. These qualitative features, as well as the quantitative differences between SmRh/sub 4/B/sub 4/ and ErRh/sub 4/B/sub 4/, are in excellent agreement with calculations using a mean-free-path--dependent Ruderman-Kittel interaction.

• Research Organization: Materials Science and Technology Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 5672551
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 54:19; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
BORIDES
BORON COMPOUNDS
COUPLING
CRITICAL TEMPERATURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ERBIUM BORIDES
ERBIUM COMPOUNDS
MAGNETIC PROPERTIES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RHODIUM BORIDES
RHODIUM COMPOUNDS
RUDERMAN-KITTEL COUPLING
SAMARIUM BORIDES
SAMARIUM COMPOUNDS
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE