Remarkable suppression of lattice thermal conductivity by electron-phonon scattering in iridium dioxide nanowires
Remarkable suppression of lattice thermal conductivity by electron-phonon scattering in iridium dioxide nanowires
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DOI：
10.1016/j.mtphys.2021.100517
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发表时间：
2021-11
影响因子：
11.5
通讯作者：
Y. Tao;Z. Pan;T. Ruch;X. Zhan;Y. Chen;S.X. Zhang;D. Li
中科院分区：
文献类型：
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作者：
Y. Tao;Z. Pan;T. Ruch;X. Zhan;Y. Chen;S.X. Zhang;D. Li
众所周知的电催化剂二氧化铱（IrO 2）最近显示出有趣的拓扑和自旋输运性质，具有潜在的应用作为电极和自旋注入器/检测器在氧化物为基础的电子和自旋电子器件。到目前为止，还没有关于其热性质的研究报告，可以揭示电子和声子相互作用的重要方面。通过结合实验和建模的努力，在这里，我们显示出相当高的热导率IrO 2，主要归因于声子输运。分析表明，大的晶格贡献是由于铱和氧原子间的强成键作用和原子质量的巨大差异。有趣的是，它被发现，电子-声子散射起着重要的作用，并导致晶格热导率显着降低。
The well-known electrocatalyst iridium dioxide (IrO2) has recently shown interesting topological and spin transport properties with potential applications as electrodes and spin injector/detector in oxide-based electronic and spintronic devices. So far, no study has been reported on its thermal properties that could disclose important aspects of electron and phonon interactions. Through combined experimental and modeling efforts, here we show rather high thermal conductivity of IrO2that is mainly attributed to phonon transport. Analysis indicates that the large lattice contribution results from the strong interatomic bonding and large difference in the atomic mass between iridium and oxygen. Interestingly, it is found that electron-phonon scattering plays a significant role and leads to a remarkable reduction in the lattice thermal conductivity.