Numerical evidence of fluctuating stripes in the normal state of high-T c cuprate superconductors

• Published in: Science (American Association for the Advancement of Science) Vol. 358; no. 6367; pp. 1161 - 1164
• Main Authors: Huang, Edwin W., Mendl, Christian B., Liu, Shenxiu, Johnston, Steve, Jiang, Hong-Chen, Moritz, Brian, Devereaux, Thomas P.
• Format: Journal Article
• Language: English
• Published: United States American Association for the Advancement of Science 01.12.2017; American Association for the Advancement of Science (AAAS)
• Subjects: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
• ISSN: 0036-8075; 1095-9203
• DOI: 10.1126/science.aak9546

Upon doping, Mott insulators often exhibit symmetry breaking where charge carriers and their spins organize into patterns known as stripes. For high–transition temperature cuprate superconductors, stripes are widely suspected to exist in a fluctuating form. We used numerically exact determinant quantum Monte Carlo calculations to demonstrate dynamical stripe correlations in the three-band Hubbard model, which represents the local electronic structure of the copper-oxygen plane. Our results, which are robust to varying parameters, cluster size, and boundary conditions, support the interpretation of experimental observations such as the hourglass magnetic dispersion and the Yamada plot of incommensurability versus doping in terms of the physics of fluctuating stripes. These findings provide a different perspective on the intertwined orders emerging from the cuprates’ normal state.