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Two-phonon excitations in an anharmonic crystal

✍ Scribed by K. N. Pathak; V. K. Jindal


Book ID
112893930
Publisher
Società Italiana di Fisica
Year
1974
Weight
150 KB
Volume
10
Category
Article
ISSN
0375-930X

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Temperature modulation and damping of an
✍ J.M. Wesselinowa; I.J. Lalov 📂 Article 📅 1986 🏛 Elsevier Science ⚖ 907 KB

In the present paper a two-phonon spectrum in the frequency region of the sum or difference of the frequencies of two optical phonons is studied. A quartic anharmonicity is investigated as a factor for damping of the one-and two-phonon states as well as a mechanism binding two phonons into a biphono