Dynamic electron-phonon and spin-phonon interactions due to inertia

Abstract

THz radiation allows for the controlled excitation of vibrational modes in molecules and crystals. We show that the circular motion of ions introduces inertial effects on electrons. In analogy to the classical Coriolis and centrifugal forces, these effects are the spin-rotation coupling, the centrifugal field coupling, the centrifugal spin-orbit coupling, and the centrifugal redshift. Depending on the phonon decay, these effects persist for various picoseconds after excitation. Potential boosting of the effects would make it a promising platform for vibration-based control of localized quantum states or chemical reaction barriers.

arXiv comment5 pages, 2 figures

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• Large effective magnetic fields from chiral phonons in rare-earth halides
• Giant effective magnetic fields from optically driven chiral phonons in 4$f$ paramagnets
• Chiral Phonons with Giant Magnetic Moments in a Topological Crystalline Insulator
• Giant effective magnetic moments of chiral phonons from orbit-lattice coupling
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• Chiral-phonon-induced current in helical crystals
• Phonon Inverse Faraday effect from electron-phonon coupling
• Theory of spin Seebeck effect activated by acoustic chiral phonons
• Anomalous phonon magnetic moments