Heat conduction through a trapped solid: effect of structural changes on thermal conductance

Details Heat conduction through a trapped solid: effect of structural changes on thermal conductance Heat conduction through a trapped solid: effect of structural changes on thermal conductance

2006-11-14

arxiv.org/abs/cond-mat/0611365v2

J. Phys.: Condens. Matter 19 (2007) 152201. (Fast Track Communication)

Physics

Condensed Matter

Soft Condensed Matter

9 pages, 3 figures, published version, minor changes

Scientific paper

We study the conduction of heat across a narrow solid strip trapped by an external potential and in contact with its own liquid. Structural changes, consisting of addition and deletion of crystal layers in the trapped solid, are produced by altering the depth of the confining potential. Nonequilibrium molecular dynamics simulations and, wherever possible, simple analytical calculations are used to obtain the thermal resistance in the liquid, solid and interfacial regions (Kapitza or contact resistance). We show that these layering transitions are accompanied by sharp jumps in the contact thermal resistance. Dislocations, if present, are shown to increase the thermal resistance of the strip drastically.

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