Van der Waals integration: Enables quantum explorations and innovative devices

Abstract

The fabrication of heterostructures and superlattices, which governs charge transport in materials, traditionally relies on high-temperature epitaxial processes. However, van der Waals (vdW) integration, a bond-free approach, has emerged as a versatile and gentle alternative. It allows for the integration of dissimilar materials beyond the thermodynamic limits, preserving material integrity and optimizing device performance. This approach has been instrumental in creating high-performance contacts for delicate lead halide perovskites, enabling quantum transport studies at low temperatures. Additionally, vdW integration has led to the development of vdW superlattices, and the chiral molecular intercalation superlattice offers a platform for exploring exotic chiral-induced spin selectivity effect and unconventional superconductivity. Together, vdW integration offers precise control over material composition and electronic structure, paving the way for innovative devices and the exploration of emergent quantum phenomena, all at the atomic scale. This groundbreaking strategy holds immense potential for advancing fundamental physical investigations and technological possibilities.

Graphical abstract