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High-temperature onset of field-induced transitions in the spin-ice compound Dy2Ti2O7
(American Physical Society, 2012-12)
We have studied the field-dependent ac magnetic susceptibility of single crystals of Dy2Ti2O7 spin ice along the [111] direction in the temperature range 1.8-7 K. Our data reflect the onset of local spin-ice order in the ...
Monopole ordered phases in dipolar and nearest-neighbors Ising pyrochlore: From spin ice to the all-in–all-out antiferromagnet
(American Physical Society, 2014-11)
We study Ising pyrochlores by means of Monte Carlo simulations. We cover a set of exchange constants ranging from the frustrated ferromagnetic case (spin-ice) to the fully-ordered “all-in–all-out” antiferromagnet in the ...
Charge Ordering in a Pure Spin Model: Dipolar Spin Ice
(Amer Physical Soc, 2013-10-04)
We study the dipolar spin-ice model at fixed density of single excitations, rho, using a Monte Carlo algorithm where processes of creation and annihilation of such excitations are banned. In the limit of rho going to zero, ...
Thermal phase transition in artificial spin ice systems induces the formation and 'migration of 'monopole-like magnetic excitations
(2016)
Artificial spin ice systems exhibit monopole -like magnetic excitations. We develop here a theoretical study of the thermal phase transition of an artificial spin ice system, and we elucidate the role of the monopole ...