Vertex corrections to the conductivity
Vertex corrections to the conductivity
Karsten Held
(ORCID: 0000-0001-5984-8549)
Disciplines
Physics, Astronomy (100%)
Keywords
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Strongly Correlated Electron Systems,
Dynamical Mean-Field Theory,
Dynamical Vertex Approximation,
Optical Conductivity,
Plasmons
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)
- Technische Universität Wien - 100%
International project participants
Research Output
- 138 Citations
- 21 Publications
Publications
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2025
Title Local correlations necessitate waterfalls as a connection between quasiparticle band and developing Hubbard bands DOI 10.1038/s41467-024-55465-7 Type Journal Article Author Krsnik J Journal Nature Communications Pages 255 Link Publication -
2023
Title Chiral magnetism and ordering of oxygen vacancies in SrTiO$_{2.5}$ DOI 10.48550/arxiv.2306.07120 Type Preprint Author Si L -
2023
Title Absence of electron-phonon-mediated superconductivity in hydrogen-intercalated nickelates DOI 10.48550/arxiv.2304.03599 Type Preprint Author Di Cataldo S -
2023
Title Transition from Diffusive to Superdiffusive Transport in Carbon Nanotube Networks via Nematic Order Control DOI 10.1021/acs.nanolett.3c00765 Type Journal Article Author Wais M Journal Nano Letters Pages 4448-4455 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 -
2024
Title Weyl points and spin-orbit coupling in copper-substituted lead phosphate apatite DOI 10.1103/physrevb.109.085103 Type Journal Article Author Braß M Journal Physical Review B Pages 085103 Link Publication -
2024
Title Fermi and Luttinger Arcs: Two Concepts, Realized on One Surface DOI 10.1103/physrevlett.133.166501 Type Journal Article Author Worm P Journal Physical Review Letters Pages 166501 Link Publication -
2024
Title Overcomplete intermediate representation of two-particle Green's functions and its relation to partial spectral functions DOI 10.1103/physrevresearch.6.043228 Type Journal Article Author Dirnböck S Journal Physical Review Research Pages 043228 Link Publication -
2024
Title Embedded multi-boson exchange: A step beyond quantum cluster theories DOI 10.1103/physrevresearch.6.043159 Type Journal Article Author Kiese D Journal Physical Review Research Pages 043159 Link Publication -
2024
Title Superconductivity in two-dimensional systems enhanced by nonadiabatic phonon-production effects DOI 10.1103/physrevb.110.l180505 Type Journal Article Author Krsnik J Journal Physical Review B -
2023
Title Multiscale Space-Time Ansatz for Correlation Functions of Quantum Systems Based on Quantics Tensor Trains DOI 10.1103/physrevx.13.021015 Type Journal Article Author Shinaoka H Journal Physical Review X Pages 021015 Link Publication -
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 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 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 Electronic structure of the putative room-temperature superconductor Pb$_9$Cu(PO$_4$)$_6$O DOI 10.48550/arxiv.2308.00676 Type Preprint Author Si L -
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 -
2023
Title Transition from Diffusive to Superdiffusive Transport in Carbon Nanotube Networks via Nematic Order Control DOI 10.48550/arxiv.2303.01866 Type Preprint Author Wais M -
2024
Title Unconventional superconductivity without doping in infinite-layer nickelates under pressure DOI 10.1038/s41467-024-48169-5 Type Journal Article Author Di Cataldo S Journal Nature Communications Pages 3952 Link Publication -
2024
Title Unambiguous Fluctuation Decomposition of the Self-Energy: Pseudogap Physics beyond Spin Fluctuations DOI 10.1103/physrevlett.132.216501 Type Journal Article Author Yu Y Journal Physical Review Letters Pages 216501 Link Publication -
2023
Title No superconductivity in Pb$_9$Cu$_1$(PO$_4$)$_6$O found in orbital and spin fluctuation exchange calculations DOI 10.48550/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