Iontronics is a newly emerging interdisciplinary concept which bridges electronics and
ionics, covering electrochemistry, solid‐state physics, electronic engineering, and biological …

Recent technical advances in the atomic-scale synthesis of oxide heterostructures have
provided a fertile new ground for creating novel states at their interfaces. Different symmetry …

Compared with the traditional von Neumann architecture, neural systems have many
distinctive properties including parallelism, low-power consumption, fault tolerance, self …

High-temperature superconductivity in copper oxides arises when a parent insulator
compound is doped beyond some critical concentration; what exactly happens at this …

With the miniaturization of electronic devices, it is essential to achieve higher carrier density
and lower operation voltage in field-effect transistors (FETs). However, this is a great …

Charge carrier control is a key issue in the development of electronic functions of
semiconductive materials. Beyond the simple enhancement of conductivity, high charge …

This review shows the highlights of a 4-year-long research project supported by the
Japanese Government to explore new superconducting materials and relevant functional …

The electrical transport properties of ultrathin YBa 2 Cu 3 O 7-x films have been modified
using an electric double layer transistor configuration employing an ionic liquid. A clear …

Field‐effect transistors with ionic‐liquid gating (ILG) have been widely employed and have
led to numerous intriguing phenomena in the last decade, due to the associated excellent …

Using heterostructures that combine a large-polarization ferroelectric (BiFeO 3) and a high-
temperature superconductor (YBa 2 Cu 3 O 7-δ), we demonstrate the modulation of the …