Abstract

We demonstrate spatial probing of carrier transport within GaAs/AlGaAs coreshell nanowires with nanometer lateral resolution and subsurface sensitivity by energy-variable electron beam induced current imaging. Carrier drift that evolves with applied electric field is distinguished from a coupled drift-diffusion length. Along with simulation of injected electron trajectories, combining beam energy tuning with precise positioning for selective probing of core and shell reveals axial position- and bias-dependent differences in carrier type and transport along parallel conduction channels. These results indicate how analysis of transport within heterostructured nanomaterials is no longer limited to nonlocal or surface measurements.

Autore Pugliese

• Lovergine Nicola

Tutti gli autori

• Chen G. , Mc Guckin T. , Gallo E.M. , Prete P. , Miccoli I. , Lovergine N. , Spanier J.E.

Titolo volume/Rivista

NANO LETTERS

Anno di pubblicazione

2015

ISSN

1530-6984

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

2

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile