Nonlinear electron-phonon interactions drive light-induced symmetry switching in charge-density waves, as captured by a new first-principles simulation framework that reproduces key experimental features in TiSe2.
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A group-theory approach labels BSE excitons with irreducible representations and total crystal angular momentum to derive selection rules and conservation laws, demonstrated in three materials.
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Nonlinear electron-phonon coupling drives light-induced symmetry switching in charge-density waves
Nonlinear electron-phonon interactions drive light-induced symmetry switching in charge-density waves, as captured by a new first-principles simulation framework that reproduces key experimental features in TiSe2.
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Symmetries of excitons
A group-theory approach labels BSE excitons with irreducible representations and total crystal angular momentum to derive selection rules and conservation laws, demonstrated in three materials.