联轴节(管道)
电子
声子
物理
凝聚态物理
材料科学
核物理学
冶金
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2019-12-05
卷期号:366 (6470): 1209.13-1211
标识
DOI:10.1126/science.366.6470.1209-m
摘要
Solid-State Physics
The coupling between electrons and phonons—lattice vibrations in solids—is responsible for macroscopic quantum phenomena such as superconductivity. Yet, experimentally measuring this coupling as a function of momentum and for a particular phonon mode is tricky. Na et al. used time- and angle-resolved photoemission spectroscopy to excite electrons in graphite and monitor their decay, which was accompanied by the release of phonons. The time constants of these decay processes provided direct information on electron-phonon couplings in this system.
Science , this issue p. [1231][1]
[1]: /lookup/doi/10.1126/science.aaw1662
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