LINEWIDTH OF PHONONS IN ORDER-DISORDER PHASE TRANSITIONS WITH RANDOM TELEGRAPH NOISE

KARACALİ H., YURTSEVEN H. H.

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, cilt.25, sa.7, ss.1005-1012, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 25 Sayı: 7
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1142/s0217979211058547
  • Dergi Adı: INTERNATIONAL JOURNAL OF MODERN PHYSICS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1005-1012
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

We derive an expression for the linewidth of phonons involved in the order phase transitions in solids. The linewidth is obtained as a function of the dwell time from which the activation energy can be computed. A new viewpoint is presented on the assumption that the fluctuations in the random variable of the noise, which is carried by the random particles involved in the order disorder mechanism, affect the linewidth of the phonons.