On the Author Correction to "Magnetic flux trapping in hydrogen-rich high-temperature superconductors", Nat Phys. 19, 1293 (2023)

In Fig. 4c, under the section titled "Pinning and thermally activated motion of vortices" in Nat Phys. 19, 1293 (2023) [1], Minkov and co-workers presented the time dependence of the magnetic moment of sulfur hydride (H3S) under high pressure and argued that they had observed magnetic flux creep at 165 K, 180 K and 185 K. Flux creep is a phenomenon observed under the assumption that the material under study can trap magnetic flux, and thus, Fig. 4c serves as evidence that H3S traps magnetic flux and is a high-temperature superconductor. The claim remains unchanged even in the recently published Author Correction [2] to Ref. [1]. However, Ref. [2] discloses an experimental protocol they used to collect the time-dependent magnetic moment data. In this Matters Arising, we point out that the protocol is not applicable to H3S under high pressure and propose an alternative protocol. The correct protocol demonstrates that the claim in Refs. [1, 2]---that their time-dependent magnetic moment data serve as evidence of "pinning and thermally activated motion of vortices"---is invalid.