Vibronic coupling to nearly localized modes in diamond |
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| Institution: | 1. College of Science, Honghe University, Mengzi 661199, Yunnan, China;2. Local Characteristic Resource Utilization and New Materials Key Laboratory of Universities in Yunnan, Honghe University, Mengzi 661199, Yunnan, China;1. Department of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden;2. Department of Materials Science and Engineering, Shanghai Institute of Technology, 201418, Shanghai, China |
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| Abstract: | The presence of sharp low energy vibronic progressions in several luminescing bands of brown diamonds is interpreted as due to a nearly localized vibrational mode, showing a weak coupling to resonant lattice phonons. The effect of this mode on the vibronic coupling is discussed and compared with experimental data. |
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