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Exotic Electronic Order in a Parabolic Kagome Semimetal
C. Alexander Baum, Jonas Issing, Sarbajit Mazumdar +4
We study an interacting kagome-lattice realization of a quadratic band-touching semimetal at 2/3 filling with onsite and nearest-neighbor repulsive interactions. Combining function…
Electron-Phonon Functional Renormalization Group of Fermi Liquid Instabilities
C. Alexander Baum, Matteo Dürrnagel, Ronny Thomale +1
We formulate a functional renormalization group (FRG) ansatz for correlated electron models that incorporates electronic interactions as well as electron-phonon coupling (EPC) stem…
Kagome metals
Domenico Di Sante, Titus Neupert, Giorgio Sangiovanni +5
Three important driving forces for creating qualitatively new phases in quantum materials are the topology of the materials' electronic band structures, frustration in the electron…
Tuning electronic correlations in the Kagome metals B
Savita Chaudhary, Armando Consiglio, Jaskaran Singh +3
The B (Y, Lu, Co, Os) family hosts a perfect kagome lattice of atoms, offering an interesting platform to investigate the interplay of electronic structure,…
Loop Current Order on the Kagome Lattice
Jun Zhan, Hendrik Hohmann, Matteo Dürrnagel +6
Recent discoveries in kagome materials have unveiled their capacity to harbor exotic quantum states, including intriguing charge density wave (CDW) and superconductivity. Notably,…
Kekulé order from diffuse nesting near higher-order Van Hove points
Jonas Beck, Jonathan Bodky, Matteo Dürrnagel +4
Translation symmetry-breaking order is assumed to be suppressed by the lack of Fermi surface nesting near certain higher-order Van Hove singularities (HOVHS). We show the anisotrop…