TY - JOUR
T1 - Structural and dynamical heterogeneities in two-dimensional melting
AU - Shiba, H.
AU - Onuki, A.
AU - Araki, T.
PY - 2009
Y1 - 2009
N2 - Using molecular-dynamics simulation, we study structural and dynamical heterogeneities at melting in two-dimensional one-component systems with 36000 particles. Between crystal and liquid we find intermediate hexatic states, where the density fluctuations are enhanced at small wave number k as well as those of the sixfold orientational order parameter. Their structure factors both grow up to the smallest wave number equal to the inverse system length. The intermediate scattering function of the density S(k, t) is found to relax exponentially with decay rate Γkkz with z∼2.6 at small k in the hexatic phase.
AB - Using molecular-dynamics simulation, we study structural and dynamical heterogeneities at melting in two-dimensional one-component systems with 36000 particles. Between crystal and liquid we find intermediate hexatic states, where the density fluctuations are enhanced at small wave number k as well as those of the sixfold orientational order parameter. Their structure factors both grow up to the smallest wave number equal to the inverse system length. The intermediate scattering function of the density S(k, t) is found to relax exponentially with decay rate Γkkz with z∼2.6 at small k in the hexatic phase.
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U2 - 10.1209/0295-5075/86/66004
DO - 10.1209/0295-5075/86/66004
M3 - Article
AN - SCOPUS:79051468824
VL - 86
JO - Journal de Physique (Paris), Lettres
JF - Journal de Physique (Paris), Lettres
SN - 0295-5075
IS - 6
M1 - 66004
ER -