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Tantalates Transcend Titanates

Publication date2021
Abstract

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
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Creation07/02/2021 6:31:00 PM
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