Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/160561
Share/Export:
logo share SHARE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Hot Carrier propagation and detection in monolayer graphene devices

AuthorsSierra, Juan F. CSIC ORCID; Costache, Marius V. CSIC ORCID; Valenzuela, Sergio O. CSIC ORCID
Issue Date2017
Citation1st Workshop Spain-Taiwan: "2D Materials and Interfaces for Spintronics" (2017)
AbstractUnderstanding the heating, energy flow and relaxation of charge carriers in nanostructures is essential for the management of heat in next generation devices, where the ever decreasing dimensions lead to increasing leakage currents, and Joule dissipation occurs in smaller and smaller volumes. The generated heat, which has to be efficiently driven away from the electronically active region, could also be used for energy harvesting by taking advantage of thermoelectric phenomena. In this talk, I will discuss our current research on hot-carrier propagation across monolayer graphene. The device consists of a monolayer graphene flake contacted by multiple metal leads. Using two remote leads for electrical heating, a carrier temperature gradient is generated that results in a measurable thermoelectric voltage VNL across the remaining (detector) leads. Due to the nonlocal character of the measurement, VNL is exclusively due to the Seebeck effect. Remarkably, a departure from the ordinary relationship between Joule power P and VNL, VNL ~ P, becomes readily apparent at low temperatures, representing a fingerprint of hot-carrier dominated thermoelectricity. By studying VNL as a function of bias, we directly determine the carrier temperature and the characteristic cooling length for hotcarrier propagation, which are key parameters for a variety of new applications that rely on hot-carrier transport.
DescriptionResumen del póster presentado al 1st Workshop Spain-Taiwan: "2D Materials and Interfaces for Spintronics", celebrado en Barcelona (España) del 23 al 25 de octubre de 2017.
URIhttp://hdl.handle.net/10261/160561
Appears in Collections:(CIN2) Comunicaciones congresos

Files in This Item:
File Description SizeFormat
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

Google ScholarTM

Check


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.