量子点
激子
光谱学
拉曼光谱
砷化镓
核磁共振
拉曼散射
材料科学
共振(粒子物理)
共振拉曼光谱
分子物理学
化学
凝聚态物理
光电子学
原子物理学
物理
光学
量子力学
作者
D. Gammon,Steven S. Brown,E. S. Snow,Thomas A. Kennedy,D. Scott Katzer,Doe Park
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:1997-07-04
卷期号:277 (5322): 85-88
被引量:156
标识
DOI:10.1126/science.277.5322.85
摘要
Resonant Raman and nuclear magnetic resonance spectroscopies from single gallium arsenide quantum dots are demonstrated. The nuclei were probed through changes in the optical spectra of the quantum dot exciton arising from exciton-nuclear interactions. This approach allowed the application of optical spectroscopy with its extremely high sensitivity and selectivity. The experiments had a lateral spatial resolution of about 10 nanometers and probe a volume that was five orders of magnitude smaller than that of previous semiconductor nuclear spectroscopic studies.
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