| 同位素掺杂对石墨烯热传导的影响 |
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| 引用本文： | 宋亮,张勇.同位素掺杂对石墨烯热传导的影响[J].新疆师范大学学报(自然科学版),2012,31(2):28-33. |
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| 作者姓名： | 宋亮 张勇 |
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| 作者单位： | 厦门大学物理系,福建厦门,361005 |
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| 摘 要： | 文章采用分子动力学模拟方法研究了同位素13C掺杂的扶手型石墨烯纳米带的热传导行为。杂质散射导致的声子局域化显著地减小了系统的热传导系数。我们进一步研究了杂质散射对四种不同声子输运模式的影响,发现在相同的杂质浓度下,TA声子遭受的散射最强,而LA声子遭受的散射最弱。
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| 关 键 词： | 石墨烯 声子局域化 热传导 |
Isotope Effect On The heat Conductivity of Graphene |
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| SONG Liang,ZHANG Yong.Isotope Effect On The heat Conductivity of Graphene[J].Journal of Xinjiang Normal University(Natural Sciences Edition),2012,31(2):28-33. |
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| Authors: | SONG Liang ZHANG Yong |
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| Institution: | (Physics Department of Xiamen University,Xiamen,Fujian,361005,China) |
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| Abstract: | In this paper,we study heat conduction behaviors in armchair—Graphene Nanoribbons （AGNRs） with isotope 13C via molecular dynamics simulation.The phonon localization induced by impurity scattering strikingly decrease the heat conductivity of AGNRs.Special attentions are paid to the various effect of impurity on three types of acoustic phonons and the second sound.We find that on the same impurity concentration level transverse acoustic modes encounter the strongest scattering,while longitudinal acoustic modes encounter the weakest scattering. |
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| Keywords: | Graphene Phonon Localization Heat Conduction |
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