Remarkable suppression of lattice thermal conductivity by electron-phonon scattering in iridium dioxide nanowires

被引：7

作者：

Tao, Y. ^{[1
,2
,3
]}

Pan, Z. ^{[1
]}

Ruch, T. ^{[4
]}

Zhan, X. ^{[5
]}

Chen, Y. ^{[2
,3
]}

Zhang, S. X. ^{[4
]}

Li, D. ^{[1
]}

机构：

[1] Vanderbilt Univ, Dept Mech Engn, 221 Kirkland Hall, Nashville, TN 37235 USA

[2] Southeast Univ, Sch Mech Engn, Nanjing 210096, Peoples R China

[3] Southeast Univ, Jiangsu Key Lab Design & Manufacture Micronano Bi, Nanjing 210096, Peoples R China

[4] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[5] Indiana Univ, Electron Microscope Ctr, Bloomington, IN 47405 USA

来源：

MATERIALS TODAY PHYSICS | 2021年 / 21卷

基金：

美国国家科学基金会;

关键词：

Iridium dioxide; Thermal conductivity; Electron-phonon scattering; Nanowires; TRANSPORT PROPERTIES; OXIDE; IRO2; METALS; STRAIN; GROWTH; RUO2;

D O I：

10.1016/j.mtphys.2021.100517

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 IrO2 that 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. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：7