拉曼光谱
钻石
激发态
热导率
声子
材料科学
激光器
光谱学
猝灭(荧光)
电导率
分析化学(期刊)
原子物理学
化学
分子物理学
凝聚态物理
光学
物理
复合材料
物理化学
荧光
量子力学
色谱法
作者
Zhijian Guo,Liang Wang,Kaiyue Wang,Chunhui Ren,Ruiang Guo,Yufei Zhang,Yuming Tian,Hongxing Wang
摘要
The thermal conductivity of IIa diamond from low temperature (80 K) to room temperature was studied by laser-excited Raman spectroscopy. The laser has two complementary effects, one performing the Raman spectrum and the other resulting in the local heating on the surface of diamond. With the increase in measurement temperature on the surface of IIa diamond, the Raman peak shifts to the low energy side together with intensity quenching due to the strong electron–phonon coupling and lattice expansion, and the thermal conductivity of IIa diamond decreases as T−1, which is attributed to the creation and the annihilation of phonons.
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