5 papers
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…
Altermagnons at the metal-insulator transition
Jonas Issing, Matteo Dürrnagel, Sarbajit Mazumdar +7
By means of slave-boson theory for the Hubbard model on the checkerboard lattice, we calculate dynamical altermagnetic spin susceptibilities from the metallic to the Mott-insulatin…
Extended s-wave altermagnets
Matteo Dürrnagel, Lennart Klebl, Tobias Müller +2
We propose extended s-wave altermagnets (sAMs) as a class of magnetic states which are fully gapped, spin-compensated, and feature spin-polarized bands. sAMs are formed through val…
Interplay of local and global quantum geometry in the stability of flat-band superfluids
Kukka-Emilia Huhtinen, Matteo Dürrnagel, Valerio Peri +1
Quantum geometry strongly impacts physical properties in flat-band systems. We consider its role in bosonic condensation and superfluidity on flat bands, and show that the superflu…
Theory of unconventional magnetism in a Cu-based kagome metal
Anja Wenger, Armando Consiglio, Hendrik Hohmann +6
Kagome metals have established a new arena for correlated electron physics. To date, the predominant experimental evidence centers around unconventional charge order, nematicity, a…