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Speaker: Sinead Griffin ( LBL)- Title: Party like it’s LK99?
August 15, 2023 @ 4:00 pm - 5:00 pm
Research Progress Meeting
Date: August 15, 2023
Time: 4:00- 5:00 pm
Location: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]
Speaker: Sinead Griffin (LBL)
Title: Party like it’s LK99?
Abstract: A recent report of room temperature superconductivity at ambient pressure in Cu-substituted apatite (`LK99′) has invigorated interest in the understanding of what systems and mechanisms allow for high-temperature superconductivity. In this talk, I will describe my recent work on identifying the origins of correlated isolated flat bands at the Fermi level in lk99, a common signature of high transition temperatures in already-established families of superconductors. I elucidate the origins of these isolated bands as arising from a structural distortion induced by the Cu ions and a chiral charge density wave from the Pb lone pairs. These results suggest that a minimal two-band model can encompass much of the low-energy physics in this system. Finally, I discuss the implications of my results on possible superconductivity in Cu-doped apatite.
Join Zoom Meeting
https://lbnl.zoom.us/j/95679892182?pwd=RU5xU2dDRFNabnR1U3pQMklkYWFIdz09
Meeting ID: 956 7989 2182
Passcode: 169037