Imaging the Meissner effect in pressurized bilayer nickelate with integrated multi-parameter quantum sensor.

ABSTRACT: Recent reports on the signatures of high-temperature superconductivity with a critical temperature (T _c) close to 80 K have triggered great research interest and extensive follow-up studies. Although zero resistance has been successfully achieved under improved hydrostatic pressure conditions, the Meissner effect of La₃Ni₂O_7-δ under high pressure remains controversial. Here, using shallow nitrogen-vacancy centers implanted on the culet of diamond anvils as in situ quantum sensors, we observe compelling evidence for the Meissner effect in polycrystalline bilayer nickelate samples: magnetic field expulsion during both field-cooling and field-warming processes. In particular, we explore the multi-parameter measurement capacity of the d

SUBMITTER: Wen J 

PROVIDER: S-EPMC12485607 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature