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Thermal conductivity of regularly spaced amorphous/crystalline silicon superlattices. A molecular dynamics study

Published online by Cambridge University Press:  29 May 2013

Konstantinos TERMENTZIDIS ,
Arthur FRANCE-LANORD ,
Etienne BLANDRE ,
Tristan ALBARET ,
Samy MERABIA ,
Valentin JEAN  and
David LACROIX
Konstantinos TERMENTZIDIS*
Affiliation:
Université de Lorraine, LEMTA, CNRS UMR 7563, BP 70239, Vandoeuvre les Nancy cedex, France
Arthur FRANCE-LANORD
Affiliation:
Université de Lorraine, LEMTA, CNRS UMR 7563, BP 70239, Vandoeuvre les Nancy cedex, France
Etienne BLANDRE
Affiliation:
Université de Lorraine, LEMTA, CNRS UMR 7563, BP 70239, Vandoeuvre les Nancy cedex, France
Tristan ALBARET
Affiliation:
Université de Lyon-1, ILM, CNRS UMR 5306, Bâtiment Kastler, 10 rue Ada Byron, 69622 Villeurbanne, France.
Samy MERABIA
Affiliation:
Université de Lyon-1, ILM, CNRS UMR 5306, Bâtiment Kastler, 10 rue Ada Byron, 69622 Villeurbanne, France.
Valentin JEAN
Affiliation:
Université de Lorraine, LEMTA, CNRS UMR 7563, BP 70239, Vandoeuvre les Nancy cedex, France
David LACROIX
Affiliation:
Université de Lorraine, LEMTA, CNRS UMR 7563, BP 70239, Vandoeuvre les Nancy cedex, France
*
*corresponding author: "konstantinos.termentzidis@univ-lorraine.fr"
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Abstract

The thermal transport in amorphous/crystalline silicon superlattices with means of molecular dynamics is presented in the current study. The procedure used to build such structures is discussed. Then, thermal conductivity of various samples is studied as a function of the periodicity of regular superlattices and of the applied temperature. Preliminarily results show that for regular amorphous/crystalline superlattices, the amorphous regions control the heat transfer within the structures. Secondly, in the studied cases thermal conductivity weakly varies with the temperature. This, points out the presence of a majority of non-propagating vibrational modes in such systems.

Keywords

amorphousthermal conductivitySi
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1543: Symposium V – Nanoscale Thermoelectric Materials, Transport Phenomena, and Applications to Solid-State Cooling and Power Generation , 2013 , pp. 71 - 79
Copyright
Copyright © Materials Research Society 2013 

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References

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