Pii: S0038-1098(99)00062-9

نویسندگان

  • H. Özkan
  • A. Aydinli
  • İ. Yilmaz
چکیده

The temperature dependence of the Raman-active mode frequencies in indium sulfide was measured in the range from 10 to 300 K. The analysis of the temperature dependence of the Ag intralayer optical modes show that Raman frequency shift results from the change of harmonic frequency with volume expansion and anharmonic coupling to phonons of other branches. The pure-temperature contribution (phonon–phonon coupling) is due to threeand four-phonon processes. q 1999 Elsevier Science Ltd. All rights reserved.

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تاریخ انتشار 1999