Davidson, B.R.B.R.DavidsonNewman, R.C.R.C.NewmanRobbie, D.A.D.A.RobbieSangster, M.J.L.M.J.L.SangsterFischer, A.A.FischerPloog, K.K.PloogWagner, J.J.Wagner2022-03-032022-03-031993https://publica.fraunhofer.de/handle/publica/18314510.1088/0268-1242/8/4/022Infrared absorption measurements of heavily carbon-doped AlAs have revealed a localized vibrational mode at 630 cmhigh-1 which appears as a Fano profile. Raman scattering measurements show a corresponding line at 634 cmhigh-1: possible reasons for the difference in frequency are discussed. The line is assigned to CsubAs acceptors and a comparison is made with a two-parameter Keating cluster model. Additional weaker lines at 615 cmhigh-1, 633 cmhigh-1 and 645 cmhigh-1 have been observed in absorption, and possible interpretations have been considered.enAlAscarbon dopingKohlenstoffdotierunglocalized vibrational modelokaler Schwingungsmodusraman spectroscopyRamanspektroskopie621667530journal article