Visualizing quantum phenomena at complex oxide interfaces: an atomic view from scanning transmission electron microscopy

TL;DR

This paper reviews recent advances in using aberration corrected scanning transmission electron microscopy to visualize and understand quantum phenomena at complex oxide interfaces, highlighting challenges and future directions.

Contribution

It provides a comprehensive overview of recent progress and identifies key challenges in applying electron microscopy to study interface phenomena in complex oxides.

Findings

Visualization of quantum phenomena at oxide interfaces

Identification of challenges in electron microscopy techniques

Insights into interface properties and defects

Abstract

Complex oxide interfaces have been one of the central focuses in condensed matter physics and material science. Over the past decade, aberration corrected scanning transmission electron microscopy and spectroscopy has proven to be invaluable to visualize and understand the emerging quantum phenomena at an interface. In this paper, we briefly review some recent progress in the utilization of electron microscopy to probe interfaces. Specifically, we discuss several important challenges for electron microscopy to advance our understanding on interface phenomena, from the perspective of variable temperature, magnetism, electron energy loss spectroscopy analysis, electronic symmetry, and defects probing.