Comment to: "Particle-hole symmetry breaking in the pseudogap state of Bi2201"

Abstract

Shen et al. [1] recently reported on ARPES data from Pb-Bi2201 revealing both particle-hole symmetry breaking and pronounced spectral broadening, which they interpret to be indicative of spatial symmetry breaking without long-range order at the opening of the pseudogap. Here is demonstrated how their results could be interpreted to reflect static and dynamic inhomogeneous crystal fields causing inter-band transfer of holes upon cooling below T*. Possible relevance to formation of charge carrier inhomogeneities is discussed, and put in perspective of a proposed quantum chemical understanding of HTS.