A microscopic picture of pseudogap phase related to charge fluxes*

Pseudogap phase in unconventional superconductors is mysterious. Previously, our work disclosed a new relation that the strength of apical charge flux in different families of cuprate superconductors obtained from our computation is correlated with the superconducting transition temperatures reported in previous experiments [1]. A microscopic picture about how such flux can further modulate the in-plane hopping of individual charge carrier was also proposed [1].

In this talk we further discuss an important emergent behavior of such charge fluxes in cuprate superconductors [2]. We use a combination of DFT simulations and theoretical modeling to quantitatively describe how such emergent behavior controls the hopping of charge carriers to give the observed pseudogap phenomena. Simulations of ARPES and resistivity are further compared with experiments. We hope that this new picture of pseudogap phase will shed light on the understanding of more complicated phenomena in the phase diagram of unconventional superconductors.

[1] Apical charge flux-modulated in-plane transport properties of cuprate superconductors, Physical Review Letters, 121, 157001 (2018)
[2] A microscopic picture of pseudogap phase related to charge fluxes, in preparation.