2017/08/25 by Phanibhusan S. Mahapatra, Kingshuk Sarkar, H. R. Krishnamurthy +2 · 73 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Thermoelectric Materials and Devices #Bilayer #Bilayer graphene #Chemistry #Condensed matter physics #Graphene #Graphene research and applications #Materials science #Nanotechnology #Phonon #Physics #Quantum mechanics #Seebeck coefficient #Thermal properties of materials #Thermoelectric effect #cond-mat.mes-hall #van der Waals force
paper · pdf · doi:10.1021/acs.nanolett.7b03097
published in Nano Letters 17(11), 6822-6827 (American Chemical Society) · This document is the unedited Author's version of a submitted work that was subsequently accepted for publication in Nano Letters, copyright American Chemical Society after peer review. To access the final edited and published work see http://pubs.acs.org/articlesonrequest/AOR-C2EphThhD7U5a4zVMHye
openalex publication_date 2017/08/25 · arxiv created 2018/01/04 · arxiv updated 2018/01/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
When two planar atomic membranes are placed within the van der Waals distance, the charge and heat transport across the interface are coupled by the rules of momentum conservation and structural commensurability, leading to outstanding thermoelectric properties. Here we show that an effective “interlayer phonon drag” determines the Seebeck coecient ( S ) across the van der Waals gap formed in twisted bilayer graphene (tBLG). The cross-plane thermovoltage, which is nonmonotonic in both temperature and density, is generated through scattering of electrons by the out-of-plane layer breathing (ZO′/ZA 2 ) phonon modes and differs dramatically from the expected Landauer–Buttiker formalism in conventional tunnel junctions. The tunability of the cross-plane Seebeck effect in van der Waals junctions may be valuable in creating a new genre of versatile thermoelectric systems with layered solids.