Fermi edge singularities for excitons created in front of a metal

Monique Combescot (1) , Odile Betbeder-Matibet (1) , Bernard Roulet (1)

1 GPS - Groupe de Physique des Solides

We predict significant changes in the absorption spectrum of excitons created close to a metal. These changes, which include shifts, splittings and tails on the high-energy sides, result from many-body interactions between the metal Fermi sea and the suddenly photocreated electron-hole pair. They have thus the same origin as Fermi edge singularities. Similar changes are expected in the optical transitions of atoms trapped close to a metallic mirror.

Monique Combescot, Odile Betbeder-Matibet, Bernard Roulet. Fermi edge singularities for excitons created in front of a metal. EPL - Europhysics Letters, 2002, 57 (5), pp.717. ⟨10.1209/epl/i2002-00522-9⟩. ⟨hal-00002596⟩