Pushpahasan, A. ; Viswanathan, K. S. (1985) Focussing and defocussing of ballistic phonons in diamond and Nb3Sn Pramana - Journal of Physics, 24 (6). pp. 875-886. ISSN 0304-4289
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Official URL: http://www.ias.ac.in/j_archive/pramana/24/6/875-88...
Related URL: http://dx.doi.org/10.1007/BF02847060
Abstract
The ballistic propagation of phonons in diamond and Nb3Sn at 40 and at 4.2 K is examined. The nature of variation of the phonon magnification factor has been analysed both in the wave vector as well as group velocity spaces. Using the Polar Schmidt-net with Pole at (π/2,π/2), the mappings of phonon focussing and defocussing are made. It is shown that the mapping for theFTA mode for Nb3Sn exhibits islands acting as impenetrable barriers for phonon propagation.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Acoustic Phonons; Focussing; Defocussing; Mapping Of Phonons; Polar Schmidtnet; Impenetrable Regions |
| ID Code: | 68492 |
| Deposited On: | 02 Nov 2011 08:05 |
| Last Modified: | 18 May 2016 15:17 |
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