Chin. Phys. Lett.  2004, Vol. 21 Issue (3): 517-520    DOI:
Original Articles |
Lattice Dynamics of Potassium-Doped Single-Walled Carbon Nanotubes
XIAO Yang1;YAN Xiao-Hong1,2;CAO Jue-Xian1;MAO Yu-Liang1;DENG Yu-Xiang1;DING Jian-Wen1
1Department of Physics and Institute of Modern Physics, Xiangtan University, Xiangtan 411105 2Interdisciplinary Center of Theoretical Studies and Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
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XIAO Yang, YAN Xiao-Hong, CAO Jue-Xian et al  2004 Chin. Phys. Lett. 21 517-520
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Abstract We calculate the vibrational properties of potassium-doped single-walled carbon nanotubes within lattice dynamical theory. The results show that the frequency of high-frequency Raman mode E2g for K5C40 downshifts to 1553 cm-1, which is in agreement with the value for highly doped samples with effective composition KC8. Moreover, the specific heat curves have a turnover at 22 K, originating from the saturation of K atoms vibrational modes at low energy.
Keywords: 61.46.+w      63.22.+m      68.43.Pq      65.80.+n     
Published: 01 March 2004
PACS:  61.46.+w  
  63.22.+m  
  68.43.Pq (Adsorbate vibrations)  
  65.80.+n  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I3/0517
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XIAO Yang
YAN Xiao-Hong
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DING Jian-Wen
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