Experimental electronic structure of the mineral superconductor covellite CuS
A. Antezak, T. Kato, P. Rezende-Gonçalves, F. Fortuna, M. Rosmus, N. Olszowska, A. F. Santander-Syro, E. Frantzeskakis
DOI 10.1103/st9q-frph · 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
Covellite (CuS) is the first known natural mineral superconductor. Despite its simple chemical formula, covellite exhibits a rich crystal structure at the origin of several remarkable properties. The ionic arrangement in CuS crystals leads to a mixed valence of Cu and a second-order structural transition at 55 K. Despite the abundance of structural studies and theoretical reports on its electronic structure, there are scarce references on its experimental band structure. By means of angle-resolved photoemission spectroscopy (ARPES), we have probed the experimental electronic structure of covellite. We compare our results with the predictions of density-functional theory (DFT) calculations. Our experimental data are in remarkable agreement with the calculations, revealing subtle fingerprints of the structural phase transition, and confirming the quasi-2D nature of the electronic structure of CuS.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CuS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.6 | Pressure not reported | unknown |
Similar papers
Phase transition and anomalous electronic behavior in the layered superconductor CuS probed by NQR
similarity 0.92R. R. Gainov et al.
Source status unknown — claims are unverified
Structural and electronic properties of the two-dimensional superconductor CuS with 113-valent copper
similarity 0.91I. I. Mazin
Source status unknown — claims are unverified
Pressure-driven superconducting dome in the vicinity of CDW in the pyrite-type superconductor CuS2
similarity 0.90L. F. Shi et al.
Source status unknown — claims are unverified
Phase transition and anomalous electronic behavior in layered dichalcogenide CuS (covellite) probed by NQR
similarity 0.90R. R. Gainov et al. · 2008 · arXiv:0809.0560
Source status unknown — claims are unverified
Experimental electronic structure of the mineral superconductor covellite CuS
similarity 0.89Alexandre Antezak et al. · 2025 · arXiv:2509.02468
Source status unknown — claims are unverified
Superconductivity in shocked Cu2Mo6S8
similarity 0.89P. Chaddah et al.
Source status unknown — claims are unverified