Scaling of the magnetoresistance of UBe/sub 13/ under pressure

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5001502

Willis, J O; McElfresh, M W; Thompson, J D; Smith, J L; Fish, Z

We report magnetoresistance measurements of the heavy electron compound UBe/sub 13/ above the superconducting transition temperature T/sub c/ and below 4 K for pressures P up to 19 kbar and for magnetic fields H up to 9T. We observe strong negative magnetoresistance at all pressures and temperatures. The resistivity /rho/ is quadratic in temperature T from T/sub c/ up to a maximum temperature of 1 K at 1 bar increasing to 2 K at 19 kbar. The slope of the T/sup 2/ term decreases with both H and with P. We find that delta(H) /triple bond/ /minus/ (/rho/(H) /minus/ /rho/(0))/rho/(0) for a given pressure scales as a function of HT and exhibits power law behavior over one decade with an exponent of 1.7. In addition, delta(H) at high pressure shows this same power law over a more limited HT range. 16 refs., 5 figs.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5001502
• Report Number(s): LA-UR-88-1556; CONF-880703-2; ON: DE88011054
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ACTINIDE COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BERYLLIUM COMPOUNDS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
INFORMATION
MAGNETIC FIELDS
MAGNETORESISTANCE
NUMERICAL DATA
PHYSICAL PROPERTIES
SCALING LAWS
TEMPERATURE DEPENDENCE
URANIUM COMPOUNDS
VERY HIGH PRESSURE