Cross-plane thermal conductivity of self-assembled Ge quantum dot superlattices

J. L. Liu, A. Khitun, K. L. Wang, W. L. Liu, G. Chen, Q. H. Xie, S. G. Thomas

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

We report the temperature dependent cross-plane thermal conductivities of Ge quantum dot superlattices measured by the 3ω method. A large reduction in the thermal conductivity of the superlattices compared with that of bulk materials is observed. A simple model taking into account the relaxation time approximation, including phonon scattering on quantum dots, well explains the experimental data.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number16
DOIs
Publication statusPublished - 2003 Apr 30

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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