Abstract
We show that if one replaces N masses in an infinite harmonic, perfect ν-dimensional crystal by N1 lighter and N2 heavier ones such that N1+ N2 =N is finite, then one introduces at most vN1 (isolated) bound states. This can be considered as an extension of the results of Romerio and Wreszinski.
Original language | English |
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Pages (from-to) | 53-58 |
Number of pages | 6 |
Journal | Journal of Statistical Physics |
Volume | 18 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1978 |
Externally published | Yes |
Keywords
- impurities
- isolated frequencies
- Lattice dynamics