We investigate the double layered Sr3(Ru1−xMnx)2O7 and its doping-induced quantum phase transition (QPT) from a metal to an antiferromagnetic (AFM) Mott insulator. Using spectroscopic imaging with the scanning tunneling microscope (STM), we visualize the evolution of the electronic states in real- and momentum-space. We find a partial-gap in the tunneling density of states at the Fermi energy (EF) that develops with doping to form a weak Mott insulating ({\Delta} ~ 100meV) state. Near the QPT, we discover a spatial electronic reorganization into a commensurate checkerboard charge order. These findings share some resemblance to the well-established universal charge order in the pseudogap phase of cuprates. Our experiments therefore demonstrate the ubiquity of the incipient charge order that emanates from doped Mott insulators.
@article{arxiv.1812.02881,
title = {Emergent charge order near the doping-induced Mott-insulating quantum phase transition in Sr$_{3}$Ru$_{2}$O$_{7}$},
author = {Justin Leshen and Mariam Kavai and Ioannis Giannakis and Yoshio Kaneko and Yoshi Tokura and Shantanu Mukherjee and Wei-Cheng Lee and Pegor Aynajian},
journal= {arXiv preprint arXiv:1812.02881},
year = {2019}
}