Physics
Document Type
Article
Abstract
In cuprates, the strong correlations in proximity to the antiferromagnetic Mott insulating state give rise to an array of unconventional phenomena beyond high-temperature superconductivity. Developing a complete description of the ground-state evolution is crucial to decoding the complex phase diagram. Here we use the structure of broken translational symmetry, namely, d-form factor charge modulations in (Bi,Pb)2(Sr,La)2CuO6+δ as a probe of the ground-state reorganization that occurs at the transition from truncated Fermi arcs to a large Fermi surface. We use real space imaging of nanoscale electronic inhomogeneity as a tool to access a range of dopings within each sample, and we definitively validate the spectral gap Δ as a proxy for local hole doping. From the Δ dependence of the charge modulation wave vector, we discover a commensurate-to-incommensurate transition that is coincident with the Fermi-surface transition from arcs to large hole pocket, demonstrating the qualitatively distinct nature of the electronic correlations governing the two sides of this quantum phase transition. Furthermore, the doping dependence of the incommensurate wave vector on the overdoped side is at odds with a simple Fermi-surface-driven instability.
Publication Title
Physical Review X
Publication Date
5-2019
Volume
9
Issue
2
ISSN
2160-3308
DOI
10.1103/PhysRevX.9.021021
Keywords
copper compounds, Fermi surface, ground state, modulation, phase diagrams, phase transitions, probes
Repository Citation
Webb, Tatiana A.; Boyer, Michael C.; Yin, Yi; Chowdhury, Debanjan; He, Yang; Kondo, Takeshi; Takeuchi, T.; Ikuta, H.; Hudson, Eric W.; Hoffman, Jennifer E.; and Hamidian, Mohammad H., "Density Wave Probes Cuprate Quantum Phase Transition" (2019). Physics. 58.
https://commons.clarku.edu/faculty_physics/58
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
