An all-electronic FRG with retarded phonon-mediated interactions treats charge, spin, nematic, and pairing instabilities on equal footing and is illustrated for the square-lattice Hubbard model with acoustic phonons.
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Molecular dynamics simulations reveal that the CDW in monolayer TiSe2 melts via a two-step fluctuation regime with defects and domain walls, while anisotropic thermal fluctuations spontaneously stabilize an asymmetric 3Q chiral CDW with C2 symmetry.
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Electron-Phonon Functional Renormalization Group of Fermi Liquid Instabilities
An all-electronic FRG with retarded phonon-mediated interactions treats charge, spin, nematic, and pairing instabilities on equal footing and is illustrated for the square-lattice Hubbard model with acoustic phonons.
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Fluctuation-driven multi-step charge density wave transition in monolayer TiSe$_2$
Molecular dynamics simulations reveal that the CDW in monolayer TiSe2 melts via a two-step fluctuation regime with defects and domain walls, while anisotropic thermal fluctuations spontaneously stabilize an asymmetric 3Q chiral CDW with C2 symmetry.