Ballistic transport and boundary scattering in InSb/In1-xAlxSb mesoscopic devices

Gilbertson, A. M., Fearn, M., Kormanyos, A., Read, Daniel ORCID: https://orcid.org/0000-0002-4178-4986, Lambert, C. J., Emeny, M. T., Ashley, T., Solin, S. A. and Cohen, L. F. 2011. Ballistic transport and boundary scattering in InSb/In1-xAlxSb mesoscopic devices. Physical Review B: Condensed Matter and Materials Physics 83 (7) , 075304. 10.1103/PhysRevB.83.075304

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Abstract

We describe the influence of hard-wall confinement and lateral dimension on the low-temperature transport properties of long diffusive channels and ballistic crosses fabricated in an InSb/In1-xAlxSb heterostructure. Partially diffuse boundary scattering is found to play a crucial role in the electron dynamics of ballistic crosses and substantially enhance the negative bend resistance. Experimental observations are supported by simulations using a classical billiard ball model for which good agreement is found when diffuse boundary scattering is included.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Additional Information:	10 pages.
Publisher:	American Physical Society
ISSN:	1098-0121
Last Modified:	07 May 2023 01:21
URI:	https://orca.cardiff.ac.uk/id/eprint/16450

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