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We started our microcanonical MD simulations with optimized coordinates and with the initial temperature of T0. Since the total energy is constant during the simulation, the average temperature after the system reaches equilibrium should be T0 /2 if the system stays in the harmonic limit. In the case of exploring the unharmonic regime, the average equilibrium temperature would stay below T0 /2. Such a deviation from the value that was based on the equipartition theorem indicates an onset of a phase transition or a so-called melting although the transitions are not sharp in small systems. ±¾È˵±³õÈÈÁ¦Ñ§ºÍͳ¼ÆÎïÀíѧµÄ¾Í²»ºÃ£¬Õâô¶àÄê»ù±¾²»ÓÃÕâЩ֪ʶ£¬Õâ¸ö½á¹û²»ÖªµÀÔõôµÃÀ´µÄ£¿Ä£ÄâµÄ¶ÔÏóÊÇÍÅ´Ø£¬¹ÂÁ¢Ìåϵ [ Last edited by aaq2800 on 2012-10-31 at 16:26 ] |
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chaizhm: ½ð±Ò+3, лл~ 2012-10-31 18:46:13
aaq2800: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú 2012-10-31 20:01:11
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chaizhm: ½ð±Ò+3, лл~ 2012-10-31 18:46:13
aaq2800: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú 2012-10-31 20:01:11
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˵µÄÊÇÌåϵÈÈÆ½ºâÖ®ºó, ¶¯ÄܺÍÊÆÄܵÄÔÙ·ÖÅä°É Èç¹ûÌåϵ in the harmonic limit, ¶¯ÄܺÍÊÆÄÜÓ¦¸ÃÏàµÈ ÌåϵÔÚ³õʼʱ¿ÌûÓÐÊÆÄÜ, ²¢ÇÒûÓжîÍâµÄÄÜÁ¿ÊäÈë, »áÓÐÒ»°ë³õʼ¶¯ÄÜת»¯ÎªÊÆÄÜ, ʹµÃ×Üζȼõ°ë ¿¼Âǵ½·ÇгÕñ, ζȽµµÍ¸ü¶àЩ |
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