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

Gilbertson, A. M., Fearn, M., Kormanyos, A., Read, Daniel ORCID:, 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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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

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