Competing magnetic and superconducting order in the rare-earth borocarbides RNi2B2C (R=Tm,Er,Ho,Dy)
Jens Jensen, Per Hedegård
DOI 10.1103/PhysRevB.76.094504 · Physical Review B
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Abstract
The competition between superconductivity and magnetic ordering in the rare-earth borocarbides is analyzed in terms of an estimate of the different contributions to the free energy. The two most important effects are the Anderson-Suhl screening [Phys. Rev. 116, 898 (1959)] of the indirect exchange interaction and the reduction of the number of Cooper-pair states by the superzone gaps created by the antiferromagnetic ordering. In the case of TmNi2B2C, the theory accounts for the anisotropy of the upper critical field, the field dependence of the radius of the vortices, and the jump in the derivative of the bulk magnetization at the superconducting transition. The theory also gives a fair account of the magnetic effects on the upper critical fields in the Er, Ho, and Dy borocarbides.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| TmNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| ErNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| HoNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| DyNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| LuNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16 | Pressure not reported | unknown |
| YNi2B2C Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16 | Pressure not reported | unknown |
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