| Issue |
Europhys. Lett.
Volume 65, Number 2, January 2004
|
|
|---|---|---|
| Page(s) | 256 - 261 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-10080-8 | |
| Published online | 01 January 2004 | |
Phase coexistence and relaxation of the spherical frustrated Blume-Emery-Griffiths model with attractive particles coupling
Dipartimento di Scienze Fisiche, INFM, Unità di Napoli Monte Sant'Angelo, I-80126 Napoli, Italy
Received:
23
September
2003
Accepted:
18
November
2003
We study the equilibrium and dynamical properties of a spherical
version of the frustrated Blume-Emery-Griffiths model at
mean-field level for attractive particle-particle coupling
(
). Beyond a second-order transition line from a
paramagnetic to a (replica symmetric) spin glass phase, the
density-temperature phase diagram is characterized by a
tricritical point from which, interestingly, a first-order
transition line starts with coexistence of the two phases. In the
Langevin dynamics the paramagnetic/spin glass discontinuous
transition line is found to be dependent on the initial density;
close to this line, on the paramagnetic side, the
correlation-response plot displays interrupted aging.
PACS: 75.10.Nr – Spin-glass and other random models / 05.50.+q – Lattice theory and statistics (Ising, Potts, etc.) / 64.60.Ht – Dynamic critical phenomena
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.