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题名:
Supersonic thermal excitation-induced shock wave in black phosphorene
作者: Chen, JG; Chen, SD; Gao, Y
刊名: PHYSICAL REVIEW B
出版日期: 2017
卷号: 95, 期号:13, 页码:-
DOI: 10.1103/PhysRevB.95.134301
文章类型: 期刊论文
英文摘要: Thermal transport in low-dimensional materials possesses various novel features since anomalous energy carriers may heavily contribute. Black phosphorene exhibits excellent thermal properties and thus it attracts attention about the possible existence of anomalous energy carriers. In this paper, we find that shockwave appears as a dominant energy carrier in the zigzag direction of black phosphorene when a supersonic thermal excitation above a critical strength is exerted. Comparing with the diffusive thermal transport, shockwave carries a considerable amount of excitation energy and propagates faster than the local acoustic speed. It leads to a strong anisotropic enhancement in the transport speed of thermal energy in the zigzag direction, up to a factor of twofold compared with no shockwave. The linear increase of velocity with intensity and exponential decay of intensity with time of the shockwave are observed. Unlike solitary waves, the collision of shockwaves exhibits no phase shift in the spatial-temporal trajectory. Moreover, it shows that shockwave velocity decreases with tensile strain, which is favorable for modulation. Our results reveal a possible anomalous energy transport process and may help in designing black phosphorene-based thermal devices.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000399381100002
ISSN号: 2469-9950
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27460
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Chen, JG,Chen, SD,Gao, Y. Supersonic thermal excitation-induced shock wave in black phosphorene[J]. PHYSICAL REVIEW B,2017-01-01,95(13):-.
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