Metals - electron-hole excitations electron-hole excitations Metals - PowerPoint PPT Presentation

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Metals - electron-hole excitations electron-hole excitations Metals - linear response function: Lindhard function k,s Fermi 2 k F sea k+q,s' 0 Metals - collective excitations collective excitations Metals - linear response function:

Metals - electron-hole excitations electron-hole excitations Metals - linear response function: Lindhard function k,s Fermi 2 k F sea k+q,s' 0
Metals - collective excitations collective excitations Metals - linear response function: Lindhard function small- q -limit:
Metals - collective excitations collective excitations Metals - plasma frequency renormalized:
Metals - collective excitations collective excitations Metals - spectrum in imagnary part plasmon electron-hole- Landau damping in e-h-continuum excitations P. Coleman decay of plasmon into finite electron-hole excitations lifetime
Metals - collective excitations collective excitations Metals - simple metals
Metals - collective excitations collective excitations Metals - classical picture restoring force - electrons ions + equation of motion oscillation frequency plasma frequency harmonic oscillator

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