Incommensurate spin and charge order in cuprate systems

ORAL

Abstract

In recent years, charge order (CO) has been found to complement spin order (SO) as an integral part of the low energy physics of cuprate superconductors. Oftentimes the respective ordering vectors become incommensurate, like, e.g., the CO wavevector in the electron-doped cuprate Nd2-xCexCuO4 (NCCO) or the SO wavevector in La-based cuprates. Based on the extended one-band Hubbard model, we apply slave-boson mean field theory and evaluate fluctuations around magnetic ground states to study the interplay of spin and charge order in these systems. Thereby, we achieve close agreement with experimental evidence from resonant inelastic x-ray scattering (RIXS) and shed light on the driving mechanisms of incommensurate order.

* The work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Project-ID 258499086 - SFB 1170 and through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter – ct.qmat Project-ID 390858490 - EXC 2147

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Publication: 1. Interplay of spin and charge order in the electron-doped cuprates
2. At the heart of the spiral - origin of incommensurate order in the hole-doped Hubbard model

Presenters

  • David Riegler

    Karlsruhe Institute of Technology

Authors

  • David Riegler

    Karlsruhe Institute of Technology

  • Michael Klett

    Julius Maximilian University of Würzburg

  • Jannis Seufert

    Julius Maximilian University of Würzburg

  • Peter Woelfle

    Karlsruhe Institute of Technology

  • Ronny Thomale

    Julius-Maximilians University of Wuerzbu, Julius-Maximilians University of Wuerzburg, Julius-Maximilians University of Wuerzbug, Julius-Maximilians-University Wuerzburg