2024-03-29T08:57:12Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00023123
2023-01-16T04:12:46Z
336:695:696
Cluster Glass Transition of Ultrasoft-Potential Fluids at High Density
Miyazaki, Ryoji
Kawasaki, Takeshi
Miyazaki, Kunimasa
open access
© 2016 American Physical Society
Using molecular dynamics simulation, we investigate the slow dynamics of a supercooled binary mixture of soft particles interacting with a generalized Hertzian potential. At low density, it displays typical slow dynamics near its glass transition temperature. At higher densities, particles bond together, forming clusters, and the clusters undergo the glass transition. The number of particles in a cluster increases one by one as the density increases. We demonstrate that there exist multiple cluster-glass phases characterized by a different number of particles per cluster, each of which is separated by distinct minima. Surprisingly, a so-called higher order singularity of the mode-coupling theory signaled by a logarithmic relaxation is observed in the vicinity of the boundaries between monomer and cluster glass phases. The system also exhibits rich and anomalous dynamics in the cluster glass phases, such as the decoupling of the self- and collective dynamics.
Erratum Phys. Rev. Lett. 117, 239902 (2016):https://doi.org/10.1103/PhysRevLett.117.239902
American Physical Society
2016-10-11
eng
journal article
VoR
http://hdl.handle.net/2237/25314
https://nagoya.repo.nii.ac.jp/records/23123
https://doi.org/10.1103/PhysRevLett.117.165701
0031-9007
Physical Review Letters
117
165701
165701
https://nagoya.repo.nii.ac.jp/record/23123/files/PhysRevLett_117_165701.pdf
application/pdf
1.1 MB
2018-02-22