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ԭʼÎÄÕ£ºTianshu Li, Ideal strength and phonon instability in single-layer MoS, Phys. Rev. B 85, 235407 ¨C Published 4 June 2012,
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.85.235407

comment: Ryan C. Cooper, Jeffrey W. Kysar, and Chris A. Marianetti, Comment on ¡°Ideal strength and phonon instability in single-layer    ¡±
Phys. Rev. B 90, 167401 (2014)
£¨T. LiµÄÎÄÕÂÀïµÄ¼ÆËã½á¹ûÓÐЩÓëR. C. CooperµÈÈ˵Ľá¹ûÓкܴó²î±ð£¬ÌرðÊÇMoS2ÔڱȽϴóµÄÓ¦±äʱÁ¦µÄÓ¦Á¦¼ÆËãÊý¾Ý£¬R. C. CooperµÈÈË»³ÒÉT. LiµÄÎÄÕÂÀïMoS2¼ÆËã½á¹ûÊDz»ÊÊÒ˵IJ½ÖèËùµ¼Ö£©

Reply: Tianshu Li, Reply to ¡°Comment on ¡®Ideal strength and phonon instability in single-layer    ¡¯ ¡±  Phys. Rev. B 90, 167402 (2014)
£¨T. LiµÄ»Ø¸´Ö¸³ö²î±ðµÄÔ­Òò£º ÔÚÓÚËû×Ô¼ºÎÄÕÂÀ¼ÆËãMoS2ÔÚÓ¦±äϵÄÓ¦Á¦Ã»Óп¼ÂÇÔ­×ÓλÖýøÐеÄin-plane relaxation)¡£

In conclusion, we identify the in-plane atomic relaxation as the root for the discrepancy between our previous paper and Cooper et al. on the reported uniaxial stress-strain curves along the zigzag and armchair directions of single layer MoS2.
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