Kazunori Ueno

TL;DR: In this paper, a perovskite-type SrTiO3 single crystal is used as the semiconducting channel for an n-type accumulation mode field effect transistor.

TL;DR: Electric-field-induced superconductivity in an insulator is reported by using an electric-double-layer gating in an organic electrolyte using a pristine SrTiO(3) single-crystal channel, indicating this method as promising for searching for unprecedented superconducting states.

TL;DR: Electric field–induced ferromagnetism at room temperature in a magnetic oxide semiconductor, (Ti,Co)O2, is demonstrated by means of electric double-layer gating with high-density electron accumulation and revealing the considerable role of electron carriers in high-temperature ferromagnetic state and demonstrating a route to room-tem temperature semiconductor spintronics.

TL;DR: The present result clearly shows that electrostatic carrier doping can lead to new states of matter at nanoscale interfaces and can induce superconductivity in KTaO(3), a material in whichsuperconductivity has not been observed before.

TL;DR: In this article, an electric double layer (EDL) formed at the electrochemical interfaces, an extremely high electric field is generated and hence high density charge carriers sufficient to induce superconductivity exist and are collectively used as a charge accumulation device known as an EDL capacitor.