Resonant interactions of phonons with donor continuum states in silicon

摘要: Abstract A study of the extrinsic photoconductivity spectra phosphorus and antimony donors in silicon at 1.5°K has revealed anti-resonances (dips) continuum photo response. These dips occur 380, 437, 479, 504 cm −1 for both donors. We interpret these as due to a resonant interaction donor states with discrete phonon states. Analogous zone center optical 520 acceptor state boron observed by Watkins et al . is not present our spectra. This attributed mismatch wave vector energy conduction band minima along 〈1 0 0〉 directions. The specific phonons giving rise data are identified.