Magnon Drag Effect on Resistivity and Thermoelectric Power of Semimetallic Antiferromagnet USb

• Authors: Z. Henkie , P. Wiśniewski
• Languages of publication: EN

Abstracts

EN

Resistivity ρ(T) and absolute thermoelectric power S(Τ) have been measured for USb single crystals characterized by different residual resis­tivity ratios, RRR = ρ(300 K)/ρ(4.2 K). A 50 μV/K peak of S(Τ) observed at 40 K for high RRR crystal vanishes for low RRR one. The ρ ∝ Τ^{4} depen­dence observed below 40 K changes to the ρ ∝ Τ^{5/2} one. These variations are ascribed to reduction of the magnon drag effect by an increased inco­herent magnetic scattering of carriers, possibly induced by a small change of composition. Resistivity anomaly is analysed above the antiferromagnetic transition temperature T_{N}. We have found that resistivity decreases as tlnt in the range 0.02 ≤ t ≤ 0.35, where t = (Τ - T_{N})/T_{N}. It is ascribed to a semimetallic character of this compound.

Keywords

EN

72.15.Eb; 72.20.Pa; 75.50.Ee; 72.15.Jf

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 88
• Issue: 6
• Pages: 1103-1112

Dates

published

1995-12

received

1994-08-23

(unknown)

1995-06-19

Contributors

author

Z. Henkie

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław 2, Poland

author

P. Wiśniewski

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław 2, Poland