Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Phonon Localization in Heat Conduction

Published

Author(s)

M. N. Luckyanova, J. Mendoza, H. Lu, B. Song, S. Huang, J. Zhou, M. Li., Y. Dong, H. Zhou, J. Garlow, L. Wu, Brian J Kirby, Alexander J Grutter, Alex A. Puretzky, Y. Zhu, M. S. Dresselhaus, A. Gossard, G. Chen

Abstract

We report localization-like behavior in phonon heat conduction observed both in measurement of the thermal conductivities of GaAs/AlAs superlattice (SL) thin films with interfacial disorder caused by ErAs nanodots randomly distributed at the interfaces, and in atomic Green's function simulations. Near room temperature, the measured thermal conductivities of the samples with ErAs dots first increased and then decreased with an increasing number of periods. The experiments and simulation point to a transition from ballistic to localized heat conduction.
Citation
Science Advances
Volume
4
Issue
10

Keywords

phonons
Created December 21, 2018, Updated October 11, 2019