Journal
JOURNAL OF APPLIED PHYSICS
Volume 127, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5132925
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Funding
- National Natural Science Foundation of China (NSFC) [11847098]
- Natural Science Foundation of Chongqing [cstc2018jcyjAX0448]
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Double elastic shock waves are rarely observed in two-dimensional (2D) materials and normally unexpected for elastically isotropic 2D crystals such as graphene. With large-scale molecular dynamics simulations, we show that in single-crystal graphene shock-loaded along nonzigzag and nonarmchair directions, double elastic shock waves (quasilongitudinal and quasitransverse) can emerge. Quantitative acoustic wave equation analysis reveals that shock-induced symmetry reduction in lattice, as well as in elastic stiffness tensor, gives rise to the normally unexpected quasitransverse wave following the quasilongitudinal wave.
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