Nat Commun February 2023 PMID 36759611

Strong charge carrier scattering at grain boundaries of PbTe caused by the collapse of metavalent bonding.

Riga Wu, Yuan Yu, Shuo Jia, Chongjian Zhou, Oana Cojocaru-Mirédin, Matthias Wuttig

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Peak: 2 in Aug 2023

across 2 sources since May 2023

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Discussions reflect an interest in the detailed mechanisms of how metavalent bonding collapse influences charge carrier scattering, with phrases like 'significant insight' and 'potential pathway for material optimization'. Technical language and questions about implications demonstrate genuine engagement and a perception of meaningful impact from the research.

AgreementModerate agreement

Most discussions acknowledge the significance of the study, especially highlighting the relationship between grain boundaries and charge carrier scattering.

InterestHigh interest

Participants show high curiosity about the mechanisms behind grain boundary effects and how it influences material properties.

EngagementModerate engagement

Comments include technical references and questions about the implications, indicating moderate to deep engagement.

ImpactModerate impact

There is a consensus that understanding these phenomena could impact material design, suggesting a recognition of the study’s broader relevance.

Abstract in brief

Grain boundaries (GBs) in PbTe significantly influence the transport of heat and charge, with stronger charge carrier scattering observed at GBs with higher misorientation angles.
The study reveals that metavalent bonding (MVB) at dislocation cores is disrupted, especially at high-angle GBs where MVB is completely destroyed due to increased Peierls distortion, leading to an increase in barrier height and carrier scattering.
The collapse of MVB results in a breakdown of dielectric screening, which explains the enhanced charge carrier scattering at GBs; understanding this relationship offers new pathways for designing better functional materials.]

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Charge Carrier Scattering at PbTe Grain Boundaries Due to Bond Collapse

This video discusses how grain boundaries in PbTe significantly affect heat and charge transport, with strong charge carrier scattering at high misorientation angles caused by the collapse of metavalent bonding, leading…

STEM RTCL TV · May 25, 2023 18 views

thermoelectrics

@te_materials · X

RT @RwthYu: Strong charge carrier scattering at grain boundaries of PbTe caused by the collapse of metavalent bonding https://t.co/4rsoYeqU…

Aug 12, 2023 · 1 share · 264 followers View post →

Yuan Yu_RWTH Aachen

@RwthYu · X

Strong charge carrier scattering at grain boundaries of PbTe caused by the collapse of metavalent bonding https://t.co/4rsoYeqUGg

Aug 12, 2023 · 1 share · 73 followers View post →