2026-06-08T12:21:05Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/719712024-09-02T14:41:20Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Sánchez Ramírez, Irián
author
Baba, Yuriko Caterina
author
Chico Gómez, Leonor María
author
Domínguez-Adame Acosta, Francisco
2023-06-22T10:59:01Z
2023-06-22T10:59:01Z
2022-07-21
2469-9950
10.1103/PhysRevB.106.045129
https://hdl.handle.net/20.500.14352/71971
https://doi.org/10.1103/PhysRevB.106.045129
https://journals.aps.org/
Thermoelectric materials enable us to harness dissipated energy and make electronic devices less energydemanding. Heat-to-electricity conversion requires materials with a strongly suppressed thermal conductivity but still high electronic conduction. This goal is largely achieved with the help of nanostructured materials, even if the bulk counterpart is not highly efficient. In this work, we investigate how thermoelectric efficiency is enhanced by many-body effects in graphene nanoribbons at low temperature. To this end, starting from the Kane-Mele-Hubbard model within a mean-field approximation, we carry out an extensive numerical study of the impact of electron-electron interactions on the thermoelectric efficiency of graphene nanoribbons with armchair or zigzag edges. We consider two different regimes, namely trivial and topological insulators. We find that electron-electron interactions are crucial for the appearance of interference phenomena that give rise to an enhancement of the thermoelectric efficiency of the nanoribbons. Lastly, we also propose an experimental setup that would help to test the validity of our conclusions.
eng
Impact of electron-electron interactions on the thermoelectric efficiency of graphene quantum point contacts
journal article
URL
https://docta.ucm.es/bitstreams/40ffa4e4-e654-48e9-85db-672755288d16/download
File
MD5
d7a0d631da654660b661df83b54108d1
2436201
application/pdf
Dguez-Adame232libre.pdf