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Spin-glass behaviour on random lattices
(IOP PUBLISHING LTDBRISTOL, 2012-10)
The ground-state phase diagram of an Ising spin-glass model on a random graph with an arbitrary fraction w of ferromagnetic interactions is analysed in the presence of an external field. Using the replica method, and ...
The Ground State Energy per Site of the Quantum and Classical Edwards-Anderson Spin Glass in the Thermodynamic Limit
(SPRINGERNEW YORK, 2012)
We derive general rigorous lower bounds for the average ground state energy per site e ((d)) of the quantum and classical Edwards-Anderson spin-glass model in dimensions d=2 and d=3 in the thermodynamic limit. For the ...
Ground-state energy and entropy of the two-dimensional Edwards-Anderson spin-glass model with different bond distributions
(Elsevier Science, 2012-02)
We study the two-dimensional Edwards–Anderson spin-glass model using a parallel tempering Monte Carlo algorithm. The ground-state energy and entropy are calculated for different bond distributions. In particular, the entropy ...
Backbone structure of the Edwards-Anderson spin-glass model
(Amer Physical Soc, 2013-10)
We study the ground-state spatial heterogeneities of the Edwards-Anderson spin-glass model with both bimodal and Gaussian bond distributions. We characterize these heterogeneities by using a general definition of bond ...
Magnetism in spin models for depleted honeycomb-lattice iridates: Spin-glass order towards percolation
(Amer Physical Soc, 2014-11-07)
Iridates are characterized by a fascinating interplay of spin-orbit and electron-electron interactions. The honeycomb-lattice materials A(2)IrO(3) (A = Na,Li) have been proposed to realize pseudospin-1/2 Mott insulating ...
Mössbauer study of spin-glass Fe x Zn1−x F2 system
(Hyperfine Interaction, 1991-11)
57Fe Mössbauer effect measurements in the diluted Ising antiferromagnet Fe x Zn1−x F2 withx=0.25 andx=0.57 at temperatures between 4.2 and 55 K, are reported. DC suceptibility measurements show a spin-glass (SG) phase at ...
The ground state energy of the edwards-anderson spin glass model with a parallel tempering monte carlo algorithm
(ELSEVIER SCIENCE BV, 2009)
Ground-state topology of the edwards-anderson +/- j spin glass model
(AMER PHYSICAL SOC, 2010)
Influence of the ground-state topology on domain-wall energy in the Edwards-Anderson ±J spin glass model
(American Physical Society, 2007-01)
We study the phase stability of the Edwards-Anderson spin glass model by analyzing the domain-wall energy. For a bimodal ±J distribution of bonds, a topological analysis of the ground state allows us to separate the system ...