Have mysterious topological valley currents been observed in graphene superlattices?
| Autor: | Stephan Roche, Stephen R Power, Branislav K Nikolić, José Hugo García, Antti-Pekka Jauho |
|---|---|
| Přispěvatelé: | Irish Research Council, European Commission, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Danish National Research Foundation, National Science Foundation (US), University of Delaware Research Foundation, Roche, Stephan, Power, Stephen R., Nikolić, Branislav K., Jauho, Antti-Pekka |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Condensed Matter - Materials Science
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Nonlocal resistance Atomic and Molecular Physics and Optics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Topological valley currents General Materials Science Graphene superlattices Graphene Quantum Physics (quant-ph) |
| Zdroj: | Roche, S, Power, S R, Nikolić, B K, García, J H & Jauho, A P 2022, ' Have mysterious topological valley currents been observed in graphene superlattices? ', JPhys Materials, vol. 5, no. 2, 021001 . https://doi.org/10.1088/2515-7639/ac452a Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona |
| Popis: | We provide a critical discussion concerning the claim of topological valley currents, driven by a global Berry curvature and valley Hall effect proposed in recent literature. After pointing out a major inconsistency of the theoretical scenario proposed to interpret giant nonlocal resistance, we discuss various possible alternative explanations and open directions of research to solve the mystery of nonlocal transport in graphene superlattices. S R P acknowledges funding from the Irish Research Council under the Laureate awards program. J H G and S R acknowledge funding from the European Union Seventh Framework Programme under Grant No. 881603 (Graphene Flagship). ICN2 is funded by the CERCA Programme/Generalitat de Catalunya and supported by the Severo Ochoa programme (MINECO Grant No. SEV-2017-0706). The Center for Nanostructured Graphene is sponsored by the Danish National Research Foundation, Project No. DNRF103. B K N was supported by the US National Science Foundation (NSF) through the University of Delaware Materials Research Science and Engineering Center DMR-2011824. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|