Pulsed optically detected NMR of single GaAs/AlGaAs quantum wells |
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| Authors: | Eickhoff Marcus Suter Dieter |
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| Institution: | 1. Department of Electronics and Radio Engineering, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Republic of Korea;2. Department of Physics, College of Science and Technology, Andhra University, Visakhapatanam, Andhra Pradesh 53003, India;1. Key Laboratory of Marine Drugs, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycoengineering, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China;2. Laboratory for Marine Drugs and Bioproducts, Innovation Center for Marine Drugs Screening and Evaluation, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China;3. Marine Biomedical Research Institute of Qingdao, Qingdao 266071, China;1. State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, PR China;2. School of Materials Science and Engineering, Yunnan University, Kunming, 650091, PR China;3. Department of Physics and Astronomy, Bowling Green State University, Bowling Green, 43403, USA;1. Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA;2. Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA |
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| Abstract: | While nuclear magnetic resonance (NMR) is one of the most important experimental tools for the analysis of bulk materials, the low sensitivity of conventional NMR makes it unsuitable for the investigation of small structures. We introduce an experimental scheme that makes NMR spectra of single, nanometer-sized quantum wells possible with excellent sensitivity and selectivity while avoiding the spectral broadening associated with some alternative techniques. The scheme combines optical pumping and pulsed radiofrequency excitation of the nuclei with time-resolved detection of the free induction decay through the polarization of the photoluminescence. |
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