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Ballistic transport and boundary scattering in InSb/In1−xAlxSb mesoscopic devices
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Gilbertson, A. M., Fearn, M., Kormányos, A., Read, D. E., Lambert, C. J., Emeny, M. T., Ashley, Tim, 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), Volume 83 (Number 7). Article number 075304. doi:10.1103/PhysRevB.83.075304
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Official URL: http://dx.doi.org/10.1103/PhysRevB.83.075304
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: | Journal Article | ||||
|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Engineering | ||||
| Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 1098-0121 | ||||
| Official Date: | 8 February 2011 | ||||
| Dates: |
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| Volume: | Volume 83 | ||||
| Number: | Number 7 | ||||
| Article Number: | Article number 075304 | ||||
| DOI: | 10.1103/PhysRevB.83.075304 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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