3D ordering at the liquid-solid polar interface of nanowires
Zamani, Mahdi (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)
Imbalzano, Giulio (École Polytechnique Fédérale de Lausanne. Laboratory of Computational Science and Modeling)
Tappy, Nicolas (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)
Alexander, Duncan T. L. (École Polytechnique Fédérale de Lausanne. Institute of Physics)
Martí-Sánchez, Sara (Institut Català de Nanociència i Nanotecnologia)
Ghisalberti, Lea (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)
Ramasse, Quentin (University of Leeds. School of Physics and Astronomy)
Friedl, Martin (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)
Tütüncüoglu, Gözde (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)
Francaviglia, Luca (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)
Bienvenue, Sebastien (École Polytechnique Fédérale de Lausanne. Laboratory of Computational Science and Modeling)
Hébert, Cécile (École Polytechnique Fédérale de Lausanne. Institute of Physics)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Ceriotti, Michele (École Polytechnique Fédérale de Lausanne. Laboratory of Computational Science and Modeling)
Fontcuberta i Morral, Anna (École Polytechnique Fédérale de Lausanne. Laboratory of Semiconductor Materials)

Data:	2020
Resum:	The nature of the liquid-solid interface determines the characteristics of a variety of physical phenomena, including catalysis, electrochemistry, lubrication, and crystal growth. Most of the established models for crystal growth are based on macroscopic thermodynamics, neglecting the atomistic nature of the liquid-solid interface. Here, experimental observations and molecular dynamics simulations are employed to identify the 3D nature of an atomic-scale ordering of liquid Ga in contact with solid GaAs in a nanowire growth configuration. An interplay between the liquid ordering and the formation of a new bilayer is revealed, which, contrary to the established theories, suggests that the preference for a certain polarity and polytypism is influenced by the atomic structure of the interface. The conclusions of this work open new avenues for the understanding of crystal growth, as well as other processes and systems involving a liquid-solid interface.
Ajuts:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Ministerio de Economía y Competitividad ENE2017-85087-C3 Ministerio de Economía y Competitividad SEV-2017-0706
Nota:	Altres ajuts: funded by the CERCA Programme/Generalitat de Catalunya. Part of the present work was performed in the framework of Universitat Autònoma de Barcelona Materials Science Ph.D. program. S.M.-S. acknowledges funding from "Programa Internacional de Becas "la Caixa"-Severo Ochoa." The authors acknowledge support from CSIC Research Platform on Quantum Technologies PTI-001. SuperSTEM is the UK National Research Facility for Advanced Electron Microscopy, supported by the Engineering and Physical Sciences Research Council (EPSRC).
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Liquid ordering ; Liquid-solid interface ; Nanowires
Publicat a:	Advanced materials, Vol. 32, issue 38 (Sep. 2020) , art. 2001030, ISSN 1521-4095

DOI: 10.1002/adma.202001030

8 p, 1.5 MB

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