Konstantinos Termentzidis
Faculté des Sciences et Technologies, LEMTA – Université de Lorraine - CNRS UMR 7563, 2, Avenue de la Foret de Haye, TSA 60604,54518 Vandoeuvre les Nancy cedex, France
Etienne Blandre
CETHIL, CNRS UMR
Arthur France-Lanord
Materials Design SARL, 92120 Montrouge, France and Commissariat `a l’Energie Atomique et aux Energies Alternatives, DSM-IRAMIS-SPEC
Valentin Jean
Université de Lorraine, LEMTA, CNRS UMR-7563
Samy Merabia
ILM, CNRS UMR-5306, Universit´e de Lyon 1
Tristan Albaret
ILM, CNRS UMR-5306, Universit´e de Lyon 1
David Lacroix
LEMTA (Laboratoire d'Energéetique et de Mécanique Théorique et Appliquée), CNRS UMR 7563 - Université Henri Poincaré, Nancy 1, Faculté des Sciences et Techniques BP 239 - 54506 VANDCEUVRE Cedex, France
The thermal conductivity of amorphous/crystalline silicon superlattices and crystalline core/amorphous shell silicon nanowires is calculated with molecular dynamics simulations. The thermal conductivity of the superlattices is of its periodicity and takes values close to the bulk amorphous one. For the case of amorphous/crystalline Si nanowires, we studied a specific configuration where the core is crystalline and the shell is amorphous. The thermal conductivity of such nanowires is very close to the amorphous one. Finally, we compare the results for silicon and germanium nanowires.