標題: Heat dissipation in quasi-ballistic single-atom contacts at room temperature
作者: Tsutsui, Makusu
Chen, Yu-Chang
交大名義發表
電子物理學系
National Chiao Tung University
Department of Electrophysics
公開日期: 10-Dec-2019
摘要: We report on evaluations of local heating in Au single-atom chains at room temperature. We performed onsite thermometry of atomic-scale Au junctions under applied sinusoidal voltage of variable amplitudes. The AC approach enabled to preclude electromigration effects for characterizing the influence of energy dissipations on the lifetime. We elucidated nonlinear increase in the effective temperature of the current-carrying single-atom chains with the voltage amplitudes, which was attributed to subtle interplay between electron-phonon scattering and electron-mediated thermal transport in the quasi-ballistic conductor. We also found that only 0.2% of the electric power contributed to local heating while the majority was consumed at the diffusive bank. The present findings can be used for thermal management of future integrated nanoelectronics.
URI: http://dx.doi.org/10.1038/s41598-019-55048-3
http://hdl.handle.net/11536/153358
ISSN: 2045-2322
DOI: 10.1038/s41598-019-55048-3
期刊: SCIENTIFIC REPORTS
Volume: 9
起始頁: 0
結束頁: 0
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