Bulletin of the American Physical Society
APS March Meeting 2023
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session Y55: Correlated Electron Materials III
8:00 AM–10:48 AM,
Friday, March 10, 2023
Room: Room 305
Sponsoring Unit: GMAG
Chair: Nan Tang, University of Tennessee
Abstract: Y55.00006 : Itinerant quasiparticle theory of the Mott insulator
9:00 AM–9:12 AM
At finite doping, the spin wave is Landau damped by the lower Hubbard band, and a zero sound mode disperses, both contingent on the presence and strength of inter-sublattice hopping. Beyond the usual spin and spacetime symmetries, the dynamic is doublon conserving and has SU(2) charge symmetry. Detuning correlated hopping renders potent p-h asymmetry distinct from flipping the sign of t' in the t'-t'-J model.
Severe instabilities present when U is small while retaining strongly correlated hopping, pointing to limitations of the quasiparticle picture and expectations of quantum order. This work aims to motivate study of the symmetric and detuned dynamics with general (non-quasiparticle) analytical and numerical methods, in the context of cuprate phenomenology.
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