Abstract
We present an analysis of acoustic-phonon propagation through long, free-standing, insulating wires with rough surfaces. Owing to a crossover from ballistic propagation of the lowest-frequency phonon mode at (Formula presented) to a diffusive (or even localized) behavior upon the increase of phonon frequency, followed by reentrance into the quasiballistic regime, the heat conductance of a wire acquires an intermediate tendency to saturate within the temperature range (Formula presented)
| Original language | English |
|---|---|
| Pages (from-to) | 15593-15596 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 60 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 1999 |
| Externally published | Yes |