Electrical resistivity and thermopower of single-crystal RNi2B2C (R=Dy, Ho, Er, Tm) magnetic superconductors
A. K. Bhatnagar, K. D. D. Rathnayaka, D. G. Naugle, P. C. Canfield
DOI 10.1103/PhysRevB.56.437 · Physical Review B
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Abstract
The in-plane resistivity ρ and thermopower S of single crystal RNi2B2C (R=Dy, Ho, Er, Tm) has been measured from 4 to 300 K. The resistivity is linear in temperature from about 100 to 300 K, but the low-temperature dependence goes as Tp with p=3.0, 2.6, 2.0, and 1.4, respectively, from Dy to Tm, in comparison to the T2 behavior previously reported for LuNi2B2C. The thermopower exhibits a region linear in T from about 100 to 300 K where the coefficient b scales by the de Gennes factor (g−1)2J(J+1) for different R=Lu, Tm-Dy. The quantity S−bT is surprisingly similar in temperature dependence and magnitude for samples with R=Y, Lu, Dy-Tm, suggesting a common, nonmagnetic contribution to the thermopower of these compounds.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| DyNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | zero_resistance |
| HoNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.6 | Pressure not reported | zero_resistance |
| ErNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.8 | Pressure not reported | zero_resistance |
| TmNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.9 | Pressure not reported | zero_resistance |
| LuNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16.6 | Pressure not reported | onset |
| YNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 15.6 | Pressure not reported | unknown |
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