Towards Exotic Layered Materials: 2D Cuprous Iodide

Abstract

Heterostructures composed of two-dimensional (2D) materials are already opening many new possibilities in such fields of technology as electronics and magnonics, but far more could be achieved if the number and diversity of 2D materials is increased. So far, only a few dozen 2D crystals have been extracted from materials that exhibit a layered phase in ambient conditions, omitting entirely the large number of layered materials that may exist in other temperatures and pressures. Here, we demonstrate how these structures can be stabilized in 2D van der Waals stacks under room temperature via growing them directly in graphene encapsulation by using graphene oxide as the template material. Specifically, we produce an ambient stable 2D structure of copper and iodine, a material that normally only occurs in layered form at elevated temperatures between 645 and 675 K. Our results establish a route to the production of more exotic phases of materials that would otherwise be difficult or impossible to stabilize for experiments in ambient.

arXiv comment15 pages, 6 figures, separate supplementary material included

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Cited by in corpus (6)

• Towards Exotic Layered Materials: 2D Cuprous Iodide
• Twist-resilient and robust ferroelectric quantum spin Hall insulators driven by van der Waals interactions
• Optoelectronic properties of the CuI, AgI and Janus Cu2BrI, and Ag2BrI monolayers by many-body perturbation theory
• Bilayer graphene as a template for manufacturing novel 2D materials
• Large spin splitting and piezoelectricity in a two-dimensional topological insulator Al${}_2$SbBi with double-layer honeycomb structure
• Hexatic Phase in Covalent Two-Dimensional Silver Iodide