Superconductivity and magnetism in the La2−xNdxRh3Si5 system
N. G. Patil, K. Ghosh, S. Ramakrishnan
DOI 10.1103/PhysRevB.52.9679 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
It is now well known that the compounds that belong to the R2Fe2Si5 series exhibit unusual superconducting and magnetic properties. Although a reasonable number of studies have been made on this series, similar efforts on another series, namely, R2Rh3Si5, whose structure is closely related to R2Fe3Si5 have not been made. In this paper, we have established the bulk superconductivity in La2Rh3Si5 below 4.4 K and bulk antiferromagnetism in Nd2Rh3Si5 below 2.7 K, from resistivity, susceptibility, and heat-capacity studies. The superconducting transition temperature of (Tc) La2Rh3Si5 decreases with the Nd substitution for La and we have analyzed this Tc dependence using Abrikosov and Gor’kov theory with crystal-field contributions. The estimated value of the interaction between the conduction electrons and the rare-earth spin (Jsf) is 37 meV which is adequate to suppress the coexistence of superconductivity and antiferromagnetism in La2−xNdxRh3Si5 alloys above 0.6 K. Finally, we have also analyzed the temperature dependence of the upper critical field of Nd-doped La2Rh3Si5 alloys using a theory which incorporates spin-orbit coupling with an additional pair breaking parameter.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2Rh3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure unresolved | onset |
| La2Rh3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure unresolved | onset |
| La2Rh3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.4 | Pressure unresolved | onset |
| Tm2Fe3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Er2Fe3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1 | Pressure not reported | unknown |
Similar papers
Magnetic ordering and superconductivity in the R2Ir3Ge5(R=Y,La,Ce–Nd,Gd–Tm,Lu) system
similarity 0.97Yogesh Singh & S. Ramakrishnan
Source status unknown — claims are unverified
Specific heat and μSR study on the noncentrosymmetric superconductor LaRhSi3
similarity 0.94V. K. Anand et al.
Source status unknown — claims are unverified
Superconducting dome and structural changes in LaRu3Si2 under pressure
similarity 0.93Z. Li et al.
Source status unknown — claims are unverified
Physical properties of noncentrosymmetric superconductor LaIrSi3: A μSR study
similarity 0.92V. K. Anand et al.
Source status unknown — claims are unverified
Superconductivity in the ternary rare-earth (Y, La, and Lu) compounds RPd2Si2 and RRh2Si2
similarity 0.92T. T. M. Palstra et al.
Source status unknown — claims are unverified
Specific-Heat Evidence for Two-Gap Superconductivity in the Ternary-Iron Silicide Lu2Fe3Si5
similarity 0.92Y. Nakajima et al.
Source status unknown — claims are unverified