<div class="csl-bib-body">
<div class="csl-entry">Toschi, A. (2025, July 7). <i>Fermi and Luttinger Arcs: Two concepts, Realized on One Surface</i> [Conference Presentation]. FisMat 2025 Conference, Venedig, Italy.</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/223481
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dc.description.abstract
I will present [1] an analytically solvable model for correlated electrons, which is able to capture the major Fermi surface modifications occurring in both hole- and electron-doped cuprates as a function of doping. The proposed Hamiltonian, which represents an extension of the Hatsugai-Kohmoto model [2], qualitatively reproduces the results of numerically demanding many-body calculations, here obtained [1] using the dynamical vertex approximation in its ladder implementation [3]. Our analytical theory provides a transparent description of a precise mechanism, capable of driving the formation of disconnected segments along the Fermi surface (the highly debated “Fermi arcs”), as well as the opening of a pseudogap in hole and electron doping. This occurs through a specific mechanism: The electronic states on the Fermi arcs remain intact, while the Fermi surface part where the gap opens transforms into a Luttinger arc. === References === [1] P. Worm, M. Reitner, K. Held, and A. Toschi, Phys. Rev. Lett. 133, 166501 (2024); [2] Y. Hatsugai and M. Kohmoto, J. Phys. Soc. Jpn. 61, 2056 (1992); [3] A. Toschi, A.A. Katanin, and K. Held, Phys. Rev. B 75, 045118 (2007); G. Rohringer et al., Rev. Mod. Phys. 90, 025003 (2018).
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dc.language.iso
en
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dc.subject
Fermi surface
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dc.subject
pseudogap
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dc.subject
Hubbard model
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dc.subject
dynamical vertex approximation
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dc.title
Fermi and Luttinger Arcs: Two concepts, Realized on One Surface
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.researchTopic.id
Q6
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tuw.researchTopic.id
C1
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tuw.researchTopic.name
Quantum Many-body Systems Physics
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tuw.researchTopic.name
Computational Materials Science
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tuw.researchTopic.value
50
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tuw.researchTopic.value
50
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tuw.publication.orgunit
E138-02 - Forschungsbereich Correlations: Theory and Experiments
