Extended Data Fig. 6: Doping and temperature dependence of Fermi arcs.
From: Dark states of electrons in a quantum system with two pairs of sublattices
a-d, Fermi surfaces of single-layer cuprates simulated with our model (Methods) at U = 0.4t1 by shifting EF for the hole concentration (p) marked on top of each panel. e-h, Fermi surfaces of single-layer cuprate simulated with our model at p = 0.17 by varying U/t1 as marked on top of each panel. Our model of sublattice interference reproduces key aspects of phenomenology in doping and temperature dependence of Fermi arcs17,19: Those in a-d reproduce a key feature in doping dependence that the length of Fermi arcs grows in size with p. More importantly, the anti-nodal gap reduces in magnitude with increasing either doping or temperature. This can also be well reproduced by our simulations in e-h by reducing U/t1 that represents the strength of symmetry breaking, no matter whether its origin is CDW or antiferromagnetism.
