Research | TARO HITOSUGI (一杉 太郎)

Oxides
In Quest of Nanoscale Physics at Oxides

Exploration of novel properties
emerging in nano-oxides

Transition metal oxides have attracted great attention because of their appealing physical properties such as superconductivity, multiferroicity, and colossal magnetoresistance. Further, oxide heterostructures have recently been studied intensively to explore exotic functions at interfaces. Atomic-scale investigation of nanosized oxides such as nanoislands and one-dimensional structures (nano-oxides) are definitely the next challenge, and novel properties in these structures should open up new perspectives. Our project aims to pioneer "quantum oxide electronics" and "nano-oxide electronics," which utilize the intriguing interplay of charge, spin, and orbital ordering coupled with quantum effects in nanoscale structures. These studies open a scientifically rewarding playground for both fundamental and application-oriented research.

The primary point of the project is to fabricate high-quality nano-oxides with atomic-level control of their thickness and length, and investigate their local electronic structure at the atomic scale using scanning tunneling microscope/spectroscopy (STM/STS). Thin films and nanostructures will be further doped with various transition metals to alter the correlation between metal ions.

• High-τ_c Superconductivity
• Multiferroics
• Ferroelectric
• Magnetism
• Metal-insulator transition
• Optical properties
• Transparent conducting properties

Jewel box of exotic properties