Accession Number:

ADP012717

Title:

Giant Drop of the Lattice Thermal Conductivity Due to Confinement of Acoustic Phonons

Descriptive Note:

Conference proceedings

Corporate Author:

CALIFORNIA UNIV BERKELEY DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1998-06-01

Pagination or Media Count:

4.0

Abstract:

Lattice thermal conductivity of a quantum well was investigated taking into account dispersion of confined acoustic phonon modes. We show that strong modificafion of phonon group velocities due to spatial confinment leads to significant increase in the phonon relaxation rates and corresponding drop in the the lattice thermal conductivitv 13 of the bulk value for 10 nm well. 0ur theoretical results are consistent with the recent experimental investigations of the thermal conductivity of a 155 nm wide Si3N4l50 nmSi155 nmSiO23OO nm quantum wll conducted in our group.

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE