Professional article
Open access

Tantalates Transcend Titanates

Publication date2021

A discussion is presented of three recent papers describing a breakthrough in superconductivity in electron doped KTaO3 and SrTiO3. In their pristine (undoped) form these materials are band insulators with a 3 eV gap. At room temperature they have the cubic perovskite structure and both materials are close to a ferroelectric instability. Upon doping with a very low density of electrons they become superconducting. Recent papers demonstrate a factor of 5 increase of the highest known Tc in this class of materials, by creating interfaces of KTaO3 with LaAlO3 and EuO.

Citation (ISO format)
VAN DER MAREL, Dirk. Tantalates Transcend Titanates. In: Journal Club for Condensed Matter Physics, 2021. doi: 10.36471/JCCM_May_2021_01
Main files (1)
Article (Published version)

Technical informations

Creation07/02/2021 6:31:00 PM
First validation07/02/2021 6:31:00 PM
Update time03/16/2023 12:50:31 AM
Status update03/16/2023 12:50:30 AM
Last indexation01/17/2024 1:36:59 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack