Quantum-mechanical time-dependent calculation for Auger processes in the volume of metals

GARCIA E.; R. C. MONREAL

PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS

The American Physical Society

Año: 2000 vol. 61 p. 13565 - 13572

0163-1829

Auger charge-transfer processes occurring in the volume of metals have been formulated in full quantummechanically. The time-dependent Hamiltonian describing these processes is written down using the jelliummodel, and solved using the Keldysh Green function formalism. Our calculated self-energies take into accountsingle-particle and plasmon excitations. We find the mathematical conditions under which the quantummechanicalsolution will be well approximated by the semiclassical solution of a rate equation. We performnumerical calculations for the He/Al system, and find that the semiclassical solution is an excellent approximationin this case.