Berry curvature and quantum metric in copper-substituted lead phosphate apatite
Berry curvature and quantum metric in copper-substituted lead phosphate apatite
The recent discovery of copper-substituted lead phosphate apatite, also known as LK-99, has caught much attention owing to certain experimental evidence of room-temperature superconductivity, although this claim is currently under intensive debate. Be it superconducting or not, we show that the normal state of this material has peculiar quantum geometrical …