Synergetic Behavior in 2D Layered Material/Complex Oxide Heterostructures

TL;DR

This paper reviews the emergent physical and chemical phenomena in 2D layered material and complex oxide heterostructures, highlighting their potential for novel physics insights and next-generation optoelectronic applications.

Contribution

It provides a comprehensive overview of recent discoveries and functionalities in various 2DLM/TMO heterostructures, emphasizing their significance for fundamental research and technology.

Findings

Voltage scaling in field-effect transistors

Charge state coupling across interfaces

Enhanced superconductivity in heterostructures

Abstract

The marriage between a two-dimensional layered material (2DLM) and a complex transition metal oxide (TMO) results in a variety of physical and chemical phenomena that would not have been achieved in either material alone. Interesting recent discoveries in systems such as graphene/SrTiO3, graphene/LaAlO3/SrTiO3, graphene/ferroelectric oxide, MoS2/SrTiO3, and FeSe/SrTiO3 heterostructures include voltage scaling in field-effect transistors, charge state coupling across an interface, quantum conductance probing of the electrochemical activity, novel memory functions based on charge traps, and greatly enhanced superconductivity. In this progress report, we review various properties and functionalities appearing in numerous different 2DLM/TMO heterostructure systems. The results imply that the multidimensional heterostructure approach based on the disparate material systems leads to an entirely new platform for the study of condensed matter physics and materials science. The heterostructures are also highly relevant technologically, as each constituent material is a promising candidate for next-generation opto-electronic devices.