Quantum energy flow in mesoscopic dielectric structures
Abstract
We investigate the phononic energy-transport properties of mesoscopic, suspended dielectric wires. The Landauer formula for the thermal conductance is derived and its universal aspects discussed. We then determine the variance of the energy current in the presence of a steady-state current flow. In the final part, some initial results are presented concerning the nature of the temperature fluctuations of a mesoscopic electron-gas thermometer due to the absorption and emission of wire phonons.
- Publication:
-
Physical Review B
- Pub Date:
- February 1999
- DOI:
- arXiv:
- arXiv:cond-mat/9803319
- Bibcode:
- 1999PhRvB..59.4992B
- Keywords:
-
- 73.23.-b;
- 63.22.+m;
- 66.70.+f;
- 42.50.Lc;
- Electronic transport in mesoscopic systems;
- Phonons or vibrational states in low-dimensional structures and nanoscale materials;
- Nonelectronic thermal conduction and heat-pulse propagation in solids;
- thermal waves;
- Quantum fluctuations quantum noise and quantum jumps;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Quantum Physics
- E-Print:
- 20 pages, 2 figures. Submitted to Phys. Rev. B