Enhanced superconducting transition temperatures in the rocksalt-type superconductors In1−xSnxTe (x≤0.5)
Kaya Kobayashi, Yukio Ai, Harald O. Jeschke, Jun Akimitsu
DOI 10.1103/PhysRevB.97.104511 · 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
We investigate superconductivity in In1−xSnxTe (x≤0.5) synthesized at high pressures of up to 2 GPa and observe an enhancement of the superconducting transition temperature Tc for increasing tin concentration x. These compounds have not been accessible in rocksalt structure via conventional ambient pressure synthesis. While the lattice constant smoothly increases with x, Tc saturates around x=0.4. Electronic structure calculations indicate that the Tc modulation is brought on by the change of the density of states in the vicinity of the Fermi energy [N(EF)]. However, differences between the calculated N(EF) and the observed electronic specific-heat coefficient indicate that the phonon dispersion plays an important role in the system and that the mechanism of superconductivity may not be the same in the entire doping range.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| In1-xSnxTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | 2 GPa | unknown |
| In0.5Sn0.5Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.9 | Pressure not reported | onset |
| In0.5Sn0.5Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.2 | Pressure not reported | onset |
| In0.7Sn0.3Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.1 | Pressure not reported | midpoint |
| In0.7Sn0.3Te Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.28 | Pressure not reported | onset |
| InTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | Pressure not reported | midpoint |
| InTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.65 | Pressure not reported | onset |
| CuxBi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| SrxBi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbxBi2Se3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| SnTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Superconductivity, pairing symmetry, and disorder in the doped topological insulator Sn1−xInxTe for x≥0.10
similarity 0.95M. P. Smylie et al.
Source status unknown — claims are unverified
Low-energy phonons and superconductivity in Sn0.8In0.2Te
similarity 0.94Zhijun Xu et al.
Source status unknown — claims are unverified
Optimizing the superconducting transition temperature and upper critical field of Sn1−xInxTe
similarity 0.94R. D. Zhong et al.
Source status unknown — claims are unverified
Anomalous composition dependence of the superconductivity in In-doped SnTe
similarity 0.93Neel Haldolaarachchige et al.
Source status unknown — claims are unverified
Superconductivity induced by In substitution into the topological crystalline insulator Pb0.5Sn0.5Te
similarity 0.93R. D. Zhong et al.
Source status unknown — claims are unverified
Tailoring band structure and band filling in a simple cubic (IV, III)-VI superconductor
similarity 0.93M. Kriener et al.
Source status unknown — claims are unverified