Vertex corrections to the conductivity

Karsten Held (ORCID: 0000-0001-5984-8549)

Disciplines

Physics, Astronomy (100%)

Keywords

  • Strongly Correlated Electron Systems,
  • Dynamical Mean-Field Theory,
  • Dynamical Vertex Approximation,
  • Optical Conductivity,
  • Plasmons
Abstract

Polaritons are quasiparticles emerging from the coupling of light to materials. The arguably best known polariton is the exciton. It consists of one electron and one hole generated through the impact of light and glued together by the Coulomb attraction. In the precessing project, a new polariton, coined p-ton, was discovered by serendipity in theoretical calculations. It consists of two electons and 2 holes that are connected to the incoming and outgoing light and glued together by magnetic or charge fluctuations that alternate in a checkerboard form. This checkerboard pattern can also be described by a change of the angle p from site to site, hence the name. The current project aims at better understanding the physics of p- tons and to lay the foundation to detect p-tons in experiment.
Research institution(s)
International project participants

Research Output

  • 101 Citations
  • 7 Publications
Publications
  • 2023
    Title No superconductivity in Pb$_9$Cu$_1$(PO$_4$)$_6$O found in orbital and spin fluctuation exchange calculations
    DOI 10.48550/arxiv.2308.07261
    Type Preprint
    Author Witt N
  • 2023
    Title Pb$_{10-x}$Cu$_x$(PO$_4$)$_6$O: a Mott or charge transfer insulator in need of further doping for (super)conductivity
    DOI 10.48550/arxiv.2308.04427
    Type Preprint
    Author Si L
  • 2023
    Title Pb10-x Cu x (PO4)6O: a Mott or charge transfer insulator in need of further doping for (super)conductivity
    DOI 10.1088/1361-648x/ad0673
    Type Journal Article
    Author Si L
    Journal Journal of Physics: Condensed Matter
    Pages 065601
    Link Publication
  • 2023
    Title Absence of electron-phonon-mediated superconductivity in hydrogen-intercalated nickelates
    DOI 10.1103/physrevb.108.174512
    Type Journal Article
    Author Di Cataldo S
    Journal Physical Review B
    Pages 174512
    Link Publication
  • 2023
    Title No superconductivity in Pb$_9$Cu$_1$(PO$_4$)$_6$O found in orbital and spin fluctuation exchange calculations
    DOI 10.21468/scipostphys.15.5.197
    Type Journal Article
    Author Witt N
    Journal SciPost Physics
    Pages 197
    Link Publication
  • 2023
    Title Electronic structure of the putative room-temperature superconductor Pb9Cu(PO4)6O
    DOI 10.1103/physrevb.108.l121110
    Type Journal Article
    Author Si L
    Journal Physical Review B
    Link Publication
  • 2022
    Title Multiscale space-time ansatz for correlation functions of quantum systems based on quantics tensor trains
    DOI 10.48550/arxiv.2210.12984
    Type Preprint
    Author Shinaoka H