PT-symmetric antiferromagnets support antiferro-chiral phonons whose sublattice-staggered angular momentum couples to the Neel vector via molecular Berry curvature.
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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.
A nonequilibrium Green's function framework predicts negative differential spin Seebeck effect and spin-current rectification in normal-metal–chiral-insulator heterostructures driven by phonon angular momentum.
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Antiferro-Chiral Phonons in $\mathcal{P}\mathcal{T}$-Symmetric Antiferromagnets
PT-symmetric antiferromagnets support antiferro-chiral phonons whose sublattice-staggered angular momentum couples to the Neel vector via molecular Berry curvature.
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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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Spin Seebeck Effect in Normal-Metal--Chiral-Insulator Heterostructure
A nonequilibrium Green's function framework predicts negative differential spin Seebeck effect and spin-current rectification in normal-metal–chiral-insulator heterostructures driven by phonon angular momentum.