Dresden 2017 – scientific programme

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O: Fachverband Oberflächenphysik

O 110: Molecular Films: Morphology, Electronics, Photovoltaics

O 110.6: Talk

Friday, March 24, 2017, 12:00–12:15, GER 38

Lazarevicite-type short-range ordering in ternary III-V nanowires — •Michael Schnedler¹, Isabelle Lefebvre², Tao Xu^2,3, Verena Portz¹, Gilles Patriarche⁴, Jean-Philippe Nys², Sébastien Plissard^2,5, Philippe Caroff^2,6, Maxime Berthe², Holger Eisele⁷, Rafal Dunin-Borkowski¹, Philipp Ebert¹, and Bruno Grandidier² — ¹Peter Grünberg Institut, Forschungszentrum Jülich GmbH, Germany — ²Dép. ISEN, Institut d’Electronique, de Microélectronique et de Nanotechnologie, CNRS, UMR 8520, Lille Cedex, France — ³Key Laboratory of Advanced Display and System Application, Shanghai University, PRC — ⁴Laboratoire de Photonique et de Nanostructures (LPN), CNRS, Université Paris-Saclay, Marcoussis, France — ⁵Laboratoire d’Analyse et d’Architecture des Systémes (LAAS), CNRS, Université de Toulouse, France — ⁶Dep. of Electronic Materials Engineering, Research School of Physics and Engineering, ANU, Canberra, Australia — ⁷Institut für Festkörperphysik, Technische Universität Berlin, Germany

Stabilizing ordering instead of randomness in alloy semiconductor materials is a powerful means to change their physical properties. We used STM and TEM to reveal an unrecognized ordering in ternary III-V materials. The lazarevicite short-range order, found in the shell of InAs_1-xSb_x nanowires, is driven by the strong Sb-Sb repulsion along ⟨110⟩ atomic chains during their incorporation on unreconstructed {110} sidewalls. Its spontaneous formation under group-III rich conditions of growth offers the prospect to broaden the limited classes of ordered structures occurring in III-V semiconductor alloys.