- Tytuł:
- Magnon Drag Effect on Resistivity and Thermoelectric Power of Semimetallic Antiferromagnet USb
- Autorzy:
-
Henkie, Z.
Wiśniewski, P. - Powiązania:
- https://bibliotekanauki.pl/articles/1943936.pdf
- Data publikacji:
- 1995-12
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
72.15.Eb
72.20.Pa
75.50.Ee
72.15.Jf - Opis:
- 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$\text{}^{4}$ dependence observed below 40 K changes to the ρ ∝ Τ $\text{}^{5}\text{}^{/}\text{}^{2}$ 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$\text{}_{N}$. We have found that resistivity decreases as tlnt in the range 0.02 ≤ t ≤ 0.35, where t = (Τ - T$\text{}_{N}$)/T$\text{}_{N}$. It is ascribed to a semimetallic character of this compound.
- Źródło:
-
Acta Physica Polonica A; 1995, 88, 6; 1103-1112
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł