Abstract
Two techniques are employed to probe the low frequency modes observed in specific heat measurements of amorphous semiconducttors. A disorder induced coupling of acoustic modes to optical radiation in these materials is demonstrated by the experimental observation of a far infrared and microwave absorption whose magnitude correlates with the density of states inferred from the T3 term in the low temperature specific heat. Enhanced densities of low frequency modes, which contribute to the T term of specific heat in glassy As2S3 and As2Se3, are confirmed from As75 spin-lattice relaxation rates determined by pulsed nuclear quadrupole resonance (NQR).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
