Epitaxially Stabilized Oxide Composed of Twisted Triangular-Lattice Layers

TL;DR

This paper reports the synthesis of a novel epitaxial oxide film composed of twisted triangular-lattice layers, opening new avenues for designing functional layered oxides with potential electronic applications.

Contribution

It introduces a new method to create twisted-layer oxide films using pulsed laser deposition, demonstrating a novel structural motif in oxide materials.

Findings

The film is confirmed to be composed of twisted triangular-lattice Rh and Bi layers.

The synthesis method enables control over the layered oxide structure.

The concept of twisted oxide layers may lead to new functional materials.

Abstract

Layered oxides have been intensively studied due to their high designability for various electronic functions. Here we synthesize a new oxide as epitaxial thin film form by pulsed laser deposition. Film characterizations including cross-section and plan-view transmission electron microscopy confirm that the film is composed of twisted stack of triangular-lattice Rh and Bi layers. We foresee that the concept of twisted oxide layers will open up a new route to design further functional layered oxides.