127 citations · 358 across the 11 of their papers we have counts for
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Spin Glass Transition at Nonzero Temperature in a Disordered Dipolar Ising System: The Case of LiHoxY{1-x}F4
Ka-Ming Tam, Michel J. P. Gingras
The physics of the spin glass (SG) state, with magnetic moments (spins) frozen in random orientations, is one of the most intriguing problems in condensed matter physics. While mos…
Effective Spin-1/2 Description of Transverse-Field-Induced Random Fields in Dipolar Spin Glasses with Strong Single-Ion Anisotropy
S. M. A. Tabei, F. Vernay, M. J. P. Gingras
We present analytical and numerical evidence for the validity of an effective S=1/2 approach to the description of random field generation in S>=1, and especially in an S=1, dipola…
Zero-temperature phase of the XY spin glass in two dimensions: Genetic embedded matching heuristic
Martin Weigel, Michel J. P. Gingras
For many real spin-glass materials, the Edwards-Anderson model with continuous-symmetry spins is more realistic than the rather better understood Ising variant. In principle, the n…
Spin and chiral stiffness of the XY spin glass in two dimensions
Martin Weigel, Michel J. P. Gingras
We analyze the zero-temperature behavior of the XY Edwards-Anderson spin glass model on a square lattice. A newly developed algorithm combining exact ground-state computations for…
Induced Random Fields in the LiHoYF Quantum Ising Magnet in a Transverse Magnetic Field
S. M. A. Tabei, M. J. P. Gingras, Y. -J. Kao +2
The LiHoYF magnetic material in a transverse magnetic field perpendicular to the Ising spin direction has long been used to study tunable quantum phas…
Ground States and Defect Energies of the Two-dimensional XY Spin Glass from a Quasi-Exact Algorithm
Martin Weigel, Michel J. P. Gingras
We employ a novel algorithm using a quasi-exact embedded-cluster matching technique as minimization method within a genetic algorithm to reliably obtain numerically exact ground st…