CME Seminar - Leigh Smith, University of Cincinnati - Thursday, January 28th - 11:30am, Smith Seminar Room (1080 PRB)

[Longbrake, Patricia]

Please join us for the Condensed Matter Experiment Seminar presented by Leigh Smith, University of Cincinnati on Thursday, January 28th at 11:30am in the Smith Seminar Room (1080 PRB).  The title and abstract for the talk are below.  Please contact me if you are interested in meeting with the speaker during his visit.

" Semiconductor Nanowire Heterostructures with Strong Quantum or Spin-Orbit Effects"

Recently the growth of semiconductor nanowires has developed so that complex strained and unstrained complex core-shell heterostructures are possible. We describe some very recent work which looks at GaAs/AlGaAs quantum well tubes where electrons and holes are confined to very thin quantum wells which are wrapped around the central core. Very strong quantum effects are seen which can be investigated using a variety of optical techniques in single nanowires and in single nanowire devices. We have begun to extend this work to large spin-orbit materials such as GaSb, InAs and InSb where complex band alignments and strong spin effects are possible in heterostructures.

We acknowledge the financial support of the NSF through grants DMR 1507844, DMR 1531373 and ECCS 1509706.
Quantum Confined Stark Effect in a GaAs/AlGaAs Nanowire Quantum Well Tube Device: Probing Exciton Localization Bekele H. Badada, Teng Shi, Howard E. Jackson, Leigh M. Smith, Changlin Zheng, Joanne Etheridge, Qiang Gao, H. Hoe Tan, and Chennupati Jagadish, Nano Letters 15, 7847-7852 (2015).
Antimony induced {112}A Faceted Triangular GaAsSb/InP Core/Shell Nanowires and Their Enhanced Optical Quality, Xiaoming Yuan, Philippe Caroffe, Fan Wang, Yanan Guo, Yuda Wang, Howard E. Jackson, Leigh M. Smith, Hark Hoe Tan, and Chennupati Jagadish, Advanced Functional Materials 25, 5300-5308 (2015).
Emergence of Localized States in Narrow GaAs/AlGaAs Nanowire Quantum Well Tubes, T. Shi, H. E. Jackson, L. M. Smith, N. Jiang, G. Qiang, H. H. Tan, and C. Jagadish, Nano Letters, 15, 1876-1882 (2015).
Carrier Thermalization Dynamics in Single Zincblende and Wurtzite InP Nanowires, Y. Wang, H. E. Jackson, L. M. Smith, T. Burgess, S. Paiman, Q. Gao, H. H. Tan, and C. Jagadish, Nano Letters, 14, 7153-7160 (2014).


Thank you,
Trisch


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