Superconducting-transition temperatures of rare-earth rhodium boride compounds, RRh4B4
B. D. Dunlap
DOI 10.1103/PhysRevB.34.1496 · Physical Review B
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Abstract
It is shown that the superconducting-transition temperatures for all RRh4B4 compounds, where R is a rare-earth (RE) element, can be combined and analyzed in a systematic way. The analysis utilizes an Abrikosov-Gorkov–type expression for pair breaking, with modifications for crystalline electric fields and changes of Tc due to nonmagnetic effects, to describe Tc values in concentrated systems, dilute alloys, and pseudoternary mixtures. As a result, it is seen that the exchange coupling parameter, N(0)scrJ2, is larger for light RE than for heavy RE, with the increase being very large near the beginning of the rare-earth series. In view of a very similar effect in the RAl2 system, it is suggested such a variation is common to RE systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LuRh4B4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11.5 | Pressure not reported | unknown |
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