Satellite interstitial electron induced superconductivity of the electride Sc4H under high pressure
Zhiyao Guan, Tian Cui, Da Li
DOI 10.1103/PhysRevB.111.014516 · 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
High-pressure electride (HPE) superconductors are distinguished from other superconductors by non-nuclear attractors (NNAs), which enable a seemingly paradoxical combination of highly localized electride states and robust superconductivity. However, the superconducting mechanism of HPE superconductors remains poorly understood, particularly the role of NNAs in superconductivity. Here, we take metal-rich Sc4H as a model to study the relationship between NNAs and superconductivity in HPEs through using first-principles calculations. We first identify that satellite interstitial electrons (SIEs) of ions, which span bands across the Fermi level and are linked to ions, are active components of NNAs and significantly affect the HPE electron–phonon coupling. The SIE electron density and interaction with neighboring ions are key determinants for adjusting the high superconducting critical temperatures of HPE superconductors. This finding effectively harmonizes the previously perceived contradictory perspectives on the impact of NNAs on the superconductivity of HPEs and deepens the understanding of the superconducting properties of HPE superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sc4H Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.74 | 50 GPa | unknown |
Similar papers
Theoretical study of stability and superconductivity of ScHn (n=4–8) at high pressure
similarity 0.94Shifeng Qian et al.
Source status unknown — claims are unverified
Pressure-induced superconductivity in Sc to 74GPa
similarity 0.91J. J. Hamlin & J. S. Schilling
Source status unknown — claims are unverified
High-temperature superconductivity in M2BH6 hydrides under near ambient pressure
similarity 0.91Weiguo Sun et al.
Source status unknown — claims are unverified
Predicted Formation of Superconducting Platinum-Hydride Crystals under Pressure in the Presence of Molecular Hydrogen
similarity 0.91Duck Young Kim et al.
Source status unknown — claims are unverified
Emergence of near room-temperature superconductivity in hydrides with H2 molecular units
similarity 0.91Zhao Liu et al.
Source status unknown — claims are unverified
Superconductivity by doping in alkali-metal hydrides without applied pressure: An ab initio study
similarity 0.90M. A. Olea-Amezcua et al.
Source status unknown — claims are unverified