Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-05-07
Physics
Condensed Matter
Strongly Correlated Electrons
14 pages, 12 EPS figures, Phys. Rev. B, in press
Scientific paper
10.1103/PhysRevB.65.245114
The UCu(5-x)Pd(x) system exhibits non-Fermi liquid (NFL) in the thermodynamic and transport properties at low temperatures for Pd concentrations 0.9 <~ x <~ 1.5. The local structure around the U, Cu, and Pd atoms has been measured for 0 <= x <= 1.5 using the X-ray Absorption Fine Structure (XAFS) technique in order to quantify the effects of lattice disorder on the NFL properties. A model which allows a percentage of the Pd atoms to occupy nominal Cu (16e) sites, s, was used to fit the Pd and Cu K edge and U L(III) edge data. Pd/Cu site interchange was found to occur in all samples (x != 0), reaching a minimum value of s ~0.17 at x = 0.7 and increasing monotonically to s ~ 0.4 at x=1.5. These data also determine the static disorder the nearest neighbor U--Cu pairs. The results indicate that the measured U--Cu static disorder is not sufficient to explain the NFL behavior of the magnetic susceptibility within the single-ion Kondo disorder model and casts doubt on the applicability of this model to UCu(5-x)Pd(x).
Bauer Eric D.
Booth Corwin H.
Chau Ricky
Kwei G. H.
Maple Brian M.
No associations
LandOfFree
Effects of lattice disorder in the UCu_(5-x)Pd_(x) system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Effects of lattice disorder in the UCu_(5-x)Pd_(x) system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of lattice disorder in the UCu_(5-x)Pd_(x) system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-504465