Thermal conductivity of group-IV semiconductors from a kinetic-collective model
The thermal conductivity of group-IV semiconductors (silicon, germanium, diamond and grey tin) with several isotopic compositions has been calculated from a kinetic-collective model. From this approach, significantly different to Callaway-like models in its physical interpretation, the thermal condu...
| Main Authors: | , , , |
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| Format: | Journal Article |
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The Royal Society Publishing
2014
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| Online Access: | http://hdl.handle.net/20.500.11937/52299 |
| _version_ | 1848758894324613120 |
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| author | de Tomas, Carla Mercedes Cantarero, A. Lopeandia, A. Alvarez, F. |
| author_facet | de Tomas, Carla Mercedes Cantarero, A. Lopeandia, A. Alvarez, F. |
| author_sort | de Tomas, Carla Mercedes |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The thermal conductivity of group-IV semiconductors (silicon, germanium, diamond and grey tin) with several isotopic compositions has been calculated from a kinetic-collective model. From this approach, significantly different to Callaway-like models in its physical interpretation, the thermal conductivity expression accounts for a transition from a kinetic (individual phonon transport) to a collective (hydrodynamic phonon transport) behaviour of the phonon field. Within the model, we confirm the theoretical proportionality between the phonon-phonon relaxation times of the group-IV semiconductors. This proportionality depends on some materials properties and it allows us to predict the thermal conductivity of the whole group of materials without the need to fit each material individually. The predictions on thermal conductivities are in good agreement with experimental data over a wide temperature range. © 2014 The Author(s) Published by the Royal Society. All rights reserved. |
| first_indexed | 2025-11-14T09:51:14Z |
| format | Journal Article |
| id | curtin-20.500.11937-52299 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:51:14Z |
| publishDate | 2014 |
| publisher | The Royal Society Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-522992017-09-13T15:39:05Z Thermal conductivity of group-IV semiconductors from a kinetic-collective model de Tomas, Carla Mercedes Cantarero, A. Lopeandia, A. Alvarez, F. The thermal conductivity of group-IV semiconductors (silicon, germanium, diamond and grey tin) with several isotopic compositions has been calculated from a kinetic-collective model. From this approach, significantly different to Callaway-like models in its physical interpretation, the thermal conductivity expression accounts for a transition from a kinetic (individual phonon transport) to a collective (hydrodynamic phonon transport) behaviour of the phonon field. Within the model, we confirm the theoretical proportionality between the phonon-phonon relaxation times of the group-IV semiconductors. This proportionality depends on some materials properties and it allows us to predict the thermal conductivity of the whole group of materials without the need to fit each material individually. The predictions on thermal conductivities are in good agreement with experimental data over a wide temperature range. © 2014 The Author(s) Published by the Royal Society. All rights reserved. 2014 Journal Article http://hdl.handle.net/20.500.11937/52299 10.1098/rspa.2014.0371 The Royal Society Publishing unknown |
| spellingShingle | de Tomas, Carla Mercedes Cantarero, A. Lopeandia, A. Alvarez, F. Thermal conductivity of group-IV semiconductors from a kinetic-collective model |
| title | Thermal conductivity of group-IV semiconductors from a kinetic-collective model |
| title_full | Thermal conductivity of group-IV semiconductors from a kinetic-collective model |
| title_fullStr | Thermal conductivity of group-IV semiconductors from a kinetic-collective model |
| title_full_unstemmed | Thermal conductivity of group-IV semiconductors from a kinetic-collective model |
| title_short | Thermal conductivity of group-IV semiconductors from a kinetic-collective model |
| title_sort | thermal conductivity of group-iv semiconductors from a kinetic-collective model |
| url | http://hdl.handle.net/20.500.11937/52299 |