Polaronic States and Superconductivity in WO<sub>3-x</sub>

Polaronic States and Superconductivity in WO<sub>3-x</sub>

Superconducting domain boundaries were found in WO<sub>3-x </sub>and doped WO<sub>3</sub>. The charge carriers in WO<sub>3</sub>-type materials were identified by Schirmer and Salje as bipolarons. Several previous attempts to determine the electronic properties of...

Full description

Bibliographic Details
Main Author: Ekhard K.H. Salje
Format: Article
Language:English
Published: MDPI AG 2020-05-01
Series:Condensed Matter
Subjects:
ferroelastic
WO3
polarons
polaronic superconductivity
Online Access:https://www.mdpi.com/2410-3896/5/2/32
id doaj-326ad336580c47aba922cdf149c73384
record_format Article
spelling doaj-326ad336580c47aba922cdf149c733842020-11-25T02:34:37ZengMDPI AGCondensed Matter2410-38962020-05-015323210.3390/condmat5020032Polaronic States and Superconductivity in WO<sub>3-x</sub>Ekhard K.H. Salje0Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EQ, UKSuperconducting domain boundaries were found in WO<sub>3-x </sub>and doped WO<sub>3</sub>. The charge carriers in WO<sub>3</sub>-type materials were identified by Schirmer and Salje as bipolarons. Several previous attempts to determine the electronic properties of polarons in WO<sub>3</sub> failed until Bousque et al. (2020) reported a full first principle calculation of free polarons in WO<sub>3</sub>. They confirmed the model of Schirmer and Salje that each single polaron is centred around one tungsten position with surplus charges smeared over the adjacent eight tungsten positions. Small additional charges are distributed further apart. Further calculations to clarify the coupling mechanism between polaron to form bipolarons are not yet available. These calculations would help to identify the carrier distribution in Magneli clusters, which were shown recently to contain high carrier concentrations and may indicate totally localized superconductivity in non-percolating clusters.https://www.mdpi.com/2410-3896/5/2/32ferroelasticWO3polaronspolaronic superconductivity
collection DOAJ
language English
format Article
sources DOAJ
author Ekhard K.H. Salje
spellingShingle Ekhard K.H. Salje
Polaronic States and Superconductivity in WO<sub>3-x</sub>
Condensed Matter
ferroelastic
WO3
polarons
polaronic superconductivity
author_facet Ekhard K.H. Salje
author_sort Ekhard K.H. Salje
title Polaronic States and Superconductivity in WO<sub>3-x</sub>
title_short Polaronic States and Superconductivity in WO<sub>3-x</sub>
title_full Polaronic States and Superconductivity in WO<sub>3-x</sub>
title_fullStr Polaronic States and Superconductivity in WO<sub>3-x</sub>
title_full_unstemmed Polaronic States and Superconductivity in WO<sub>3-x</sub>
title_sort polaronic states and superconductivity in wo<sub>3-x</sub>
publisher MDPI AG
series Condensed Matter
issn 2410-3896
publishDate 2020-05-01
description Superconducting domain boundaries were found in WO<sub>3-x </sub>and doped WO<sub>3</sub>. The charge carriers in WO<sub>3</sub>-type materials were identified by Schirmer and Salje as bipolarons. Several previous attempts to determine the electronic properties of polarons in WO<sub>3</sub> failed until Bousque et al. (2020) reported a full first principle calculation of free polarons in WO<sub>3</sub>. They confirmed the model of Schirmer and Salje that each single polaron is centred around one tungsten position with surplus charges smeared over the adjacent eight tungsten positions. Small additional charges are distributed further apart. Further calculations to clarify the coupling mechanism between polaron to form bipolarons are not yet available. These calculations would help to identify the carrier distribution in Magneli clusters, which were shown recently to contain high carrier concentrations and may indicate totally localized superconductivity in non-percolating clusters.
topic ferroelastic
WO3
polarons
polaronic superconductivity
url https://www.mdpi.com/2410-3896/5/2/32
work_keys_str_mv AT ekhardkhsalje polaronicstatesandsuperconductivityinwosub3xsub
_version_ 1724807912857010176

Similar Items