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Reconciliation of the Conwell-Weisskopf and Brooks-Herring formulae for charged-impurity scattering in semiconductors: Third-body interference

1977; IOP Publishing; Volume: 10; Issue: 10 Linguagem: Inglês

10.1088/0022-3719/10/10/003

1747-3802

B. K. Ridley,

Electromagnetic Scattering and Analysis

The divergence at small scattering angles for unscreened charged-impurity scattering may be removed by including the probability that a closer scattering centre does not exist. This introduces an exponential function like the screening factor, which allows a straightforward bridging to be made between non-screening and screening situations. An expression for the mobility which encompasses the Conwell-Weisskopf and Brooks-Herring results is derived.