Growth of large crystals of Janus phase RhSeCl using self-selecting vapour growth

Article Article scientifique Article Growth of large crystals of Janus phase RhSeCl using self-selecting vapour growth eng 2026 author Lukovkina Anastasiia 0009-0007-9272-7627 Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 402397 Département de physique de la matière quantique (FIMAC) author Herz Maria Annette 0000-0002-1053-4466 Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 419553 Département de physique de la matière quantique (FIMAC) author Lin Xiaohanwen Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 974954 Département de physique de la matière quantique (FIMAC) author Multian Volodymyr Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 977279 Département de physique de la matière quantique (FIMAC) author Morpurgo Alberto Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 666794 Département de physique de la matière quantique (FIMAC) author Giannini Enrico 0000-0003-3536-4771 Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 503364 Département de physique de la matière quantique (FIMAC) author von Rohr Fabian 0000-0003-0422-6042 Department of Quantum Matter Physics, University of Geneva 24 Quai Ernest-Ansermet CH-1211 Geneva Switzerland fabian.vonrohr@unige.ch +41 22 379 64 78. 973176 Département de physique de la matière quantique (FIMAC) Fabian Oliver Von Rohr 1256-1264 10.1039/D5CE01170A 41623922 1466-8033 PMC12857252 https://xlink.rsc.org/?DOI=D5CE01170A In recent years, interest in 2D Janus materials has grown exponentially, particularly with regard to their applications in spintronics and optoelectronic devices. The defining feature of Janus materials is the ordered arrangement of different layer terminations - creating chemically distinct surfaces and an inherent out-of-plane polarity. Among the few known Janus materials, RhSeCl is particularly intriguing as a rare example of an intrinsic Janus compound. Owing to its exceptional chemical stability, RhSeCl offers a promising platform for exploring the physics related to the Janus-structure. However, synthesising large, high-quality crystals of this compound remains a significant challenge. Here, we report a novel synthetic pathway for growing crystals up to 6 mm in lateral size <i>via</i> a two-step self-selecting vapour growth reaction. We further present a comprehensive comparison of newly developed synthesis routes with all previously reported methods for RhSeCl. During these investigations, we identified a previously unreported impurity that forms in specific growth pathways and demonstrate how it can be avoided to obtain phase-pure few- and monolayer flakes. We showcase the reproducibility of the process to obtain high-quality, large single-crystals and flakes. Dewey 500.2 Swiss National Science Foundation Discovery of Topological Superconductivity by Combining Physical and Chemical Design Principles 194183 CH 33 Département de physique de la matière quantique 131 false 1383 Groupe von Rohr 678 Groupe Morpurgo CrystEngComm 28 7 a67d373e-cc8e-4a1d-be95-4810b4cda7aa Article (Published version) Public Article_scientifique_from_crossref.pdf 1848284 application/pdf CC BY-4.0 34162ab128947ae6066dc2bb3768c8bfcb98ef6363ad8b552a38c2279ecc4006 openAccess Faculté des sciences / Section de physique / Département de physique de la matière quantique

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Growth of large crystals of Janus phase RhSeCl using self-selecting vapour growth	CrystEngComm			2026	2	50

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Herz, Maria Annette