期刊
PHYSICAL REVIEW B
卷 89, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.125403
关键词
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资金
- CONSOLIDER INGENIO: NANOTherm [CSD2010-00044]
- Diputacion Foral de Gipuzkoa [Q4818001B]
- European Research Council Advanced Grant DYNamo [ERC-2010-AdG-267374]
- Spanish Grants [FIS2010-21282-C02-01]
- Grupos Consolidados UPV/EHU del Gobierno Vasco [IT578-13]
- Ikerbasque
- [MAT2012-33483]
The thermoelectric properties in one- and two-dimensional silicon and germanium structures have been investigated using first-principles density functional techniques and linear response for the thermal and electrical transport. We have considered here the two-dimensional silicene and germanene, together with nanoribbons of different widths. For the nano ribbons, we have also investigated the possibility of nano structuring these systems by mixing silicon and germanium. We found that the figure of merit at room temperature of these systems is remarkably high, up to 2.5.
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