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 |
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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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