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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.

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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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Additional URL for this publicationhttps://www.condmatjclub.org/?p=4423
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Creation02/07/2021 18:31:00
First validation02/07/2021 18:31:00
Update time16/03/2023 00:50:31
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