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arXiv · 2312.17700

Fermi and Luttinger arcs: two concepts, realized on one surface

Paul Worm·Matthias Reitner·Karsten Held·Alessandro Toschi
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Abstract

We present 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 qualitatively reproduces the results of numerically demanding many-body calculations, here obtained using the dynamical vertex approximation. Our analytical theory provides a transparent description of a precise mechanism, capable to drive the formation of disconnected segments along the Fermi surface (the highly debated "Fermi arcs") as well as of the opening of a pseudogap at 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.

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Paul Worm, Matthias Reitner, Karsten Held, Alessandro Toschi. 2023-12-29. Fermi and Luttinger arcs: two concepts, realized on one surface. https://doi.org/10.1103/physrevlett.133.166501

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