Acoustoelectric Current in Graphene Nanoribbons

Abstract Surface acoustic waves (SAWs) propagating on piezoelectric substrates offer a convenient, contactless approach to probing the electronic properties of low-dimensional charge carrier systems such as graphene nanoribbons (GNRs). SAWs can also be used to transport and manipulate charge for app...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	T. Poole, G. R. Nash
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6715bd04117d47339bbfb79736b87faf
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:6715bd04117d47339bbfb79736b87faf
record_format	dspace
spelling	oai:doaj.org-article:6715bd04117d47339bbfb79736b87faf2021-12-02T12:31:46ZAcoustoelectric Current in Graphene Nanoribbons10.1038/s41598-017-01979-82045-2322https://doaj.org/article/6715bd04117d47339bbfb79736b87faf2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01979-8https://doaj.org/toc/2045-2322Abstract Surface acoustic waves (SAWs) propagating on piezoelectric substrates offer a convenient, contactless approach to probing the electronic properties of low-dimensional charge carrier systems such as graphene nanoribbons (GNRs). SAWs can also be used to transport and manipulate charge for applications such as metrology and quantum information. In this work, we investigate the acoustoelectric effect in GNRs, and show that an acoustoelectric current can be generated in GNRs with physical widths as small as 200 nm at room temperature. The positive current in the direction of the SAWs, which corresponds to the transportation of holes, exhibits a linear dependence on SAW intensity and frequency. This is consistent with the description of the interaction between the charge carriers in the GNRs and the piezoelectric fields associated with the SAWs being described by a relatively simple classical relaxation model. Somewhat counter-intuitively, as the GNR width is decreased, the measured acoustoelectric current increases. This is thought to be caused by an increase of the carrier mobility due to increased doping arising from damage to the GNR edges.T. PooleG. R. NashNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q T. Poole G. R. Nash Acoustoelectric Current in Graphene Nanoribbons
description	Abstract Surface acoustic waves (SAWs) propagating on piezoelectric substrates offer a convenient, contactless approach to probing the electronic properties of low-dimensional charge carrier systems such as graphene nanoribbons (GNRs). SAWs can also be used to transport and manipulate charge for applications such as metrology and quantum information. In this work, we investigate the acoustoelectric effect in GNRs, and show that an acoustoelectric current can be generated in GNRs with physical widths as small as 200 nm at room temperature. The positive current in the direction of the SAWs, which corresponds to the transportation of holes, exhibits a linear dependence on SAW intensity and frequency. This is consistent with the description of the interaction between the charge carriers in the GNRs and the piezoelectric fields associated with the SAWs being described by a relatively simple classical relaxation model. Somewhat counter-intuitively, as the GNR width is decreased, the measured acoustoelectric current increases. This is thought to be caused by an increase of the carrier mobility due to increased doping arising from damage to the GNR edges.
format	article
author	T. Poole G. R. Nash
author_facet	T. Poole G. R. Nash
author_sort	T. Poole
title	Acoustoelectric Current in Graphene Nanoribbons
title_short	Acoustoelectric Current in Graphene Nanoribbons
title_full	Acoustoelectric Current in Graphene Nanoribbons
title_fullStr	Acoustoelectric Current in Graphene Nanoribbons
title_full_unstemmed	Acoustoelectric Current in Graphene Nanoribbons
title_sort	acoustoelectric current in graphene nanoribbons
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6715bd04117d47339bbfb79736b87faf
work_keys_str_mv	AT tpoole acoustoelectriccurrentingraphenenanoribbons AT grnash acoustoelectriccurrentingraphenenanoribbons
_version_	1718394282067361792

Acoustoelectric Current in Graphene Nanoribbons

Ejemplares similares