Independent confirmation of transient diamagnetism in driven YBa_2Cu_3O_6.48 · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title · changed
Revision 1: Independent confirmation of transient diamagnetism in driven YBa2Cu3O6.48
Revision 2: Independent confirmation of transient diamagnetism in driven $\mathrm{YBa_2Cu_3O_6}$.48
Plain · changed
Revision 1: In 2024 a group reported that light-driven YBa2Cu3O6.48 briefly pushes out magnetic field, as a superconductor does. Independent reproduction and other explanations are under discussion.
Revision 2: In 2024 a group reported that light-driven $\mathrm{YBa_2Cu_3O_6}$.48 briefly pushes out magnetic field, as a superconductor does. Independent reproduction and other explanations are under discussion.
Precise · changed · core
Revision 1: Fava et al. (Nature 2024) reported a transient diamagnetic response of about 30 percent of complete expulsion after mid-infrared excitation of YBa2Cu3O6.48 above its equilibrium $T_{c}$, measured by Faraday rotation in an adjacent magneto-optic layer. Does an independent measurement with a different probe reproduce the effect, and can non-superconducting mechanisms (photoinduced magnetization changes, thermal or eddy-current effects) be excluded? Answer yes or no.
Revision 2: Fava et al. (Nature 2024) reported a transient diamagnetic response of about 30 percent of complete expulsion after mid-infrared excitation of $\mathrm{YBa_2Cu_3O_6}$.48 above its equilibrium $T_{c}$, measured by Faraday rotation in an adjacent magneto-optic layer. Does an independent measurement with a different probe reproduce the effect, and can non-superconducting mechanisms (photoinduced magnetization changes, thermal or eddy-current effects) be excluded? Answer yes or no.
Settled by
Reproduction by an independent group with a second probe (e.g. nitrogen-vacancy magnetometry or pickup loops) plus control experiments excluding non-superconducting magnetization.
Kind
well-posed
Answer type
yes-no
References
(empty)
Literature status
contested
Status note
Reported in 2024 (https://doi.org/10.1038/s41586-024-07635-2); interpretation debated.
Posed since
2024

Decisions