Supplementary information for Localization and Directionality of Surface Transport in Bi2Te3 Ordered 3D Nanonetworks [Dataset]
The resistance of an ordered 3D-Bi2Te3 nanowire nanonetwork was studied at low temperatures. Below 50 K the increase in resistance was found to be compatible with the Anderson model for localization, considering that conduction takes place in individual parallel channels across the whole sample. Ang...
| Autores: | , , , , , , , , |
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| Tipo de documento: | conjunto de datos |
| Data de publicação: | 2023 |
| País: | España |
| Recursos: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositório: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/371014 |
| Acesso em linha: | http://hdl.handle.net/10261/371014 https://digital.csic.es/handle/10261/370827 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Seebeck coefficient observed Conduction takes place Nanowire nanonetwork compared Coherence length obtained Ordered 3d nanonetworks Nanowire nanonetwork Coherence length Ordered 3d Whole sample Surface transport Spatial arrangement Low temperatures Greatly reduced Double feature Could associate Anderson model Metamaterials Bismuth telluride 3D-AAO Nano-network Localization effects |
| Resumo: | The resistance of an ordered 3D-Bi2Te3 nanowire nanonetwork was studied at low temperatures. Below 50 K the increase in resistance was found to be compatible with the Anderson model for localization, considering that conduction takes place in individual parallel channels across the whole sample. Angle-dependent magnetoresistance measurements showed a distinctive weak antilocalization characteristic with a double feature that we could associate with transport along two perpendicular directions, dictated by the spatial arrangement of the nanowires. The coherence length obtained from the Hikami–Larkin–Nagaoka model was about 700 nm across transversal nanowires, which corresponded to approximately 10 nanowire junctions. Along the individual nanowires, the coherence length was greatly reduced to about 100 nm. The observed localization effects could be the reason for the enhancement of the Seebeck coefficient observed in the 3D-Bi2Te3 nanowire nanonetwork compared to individual nanowires. |
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