Fig. 3 | Nature Communications

Fig. 3

From: Fragmentation in spin ice from magnetic charge injection

Fig. 3

Dynamical properties and diffusion of the excitations. a Low temperature dependence of the ZFC-FC magnetization performed in 5 mT below 4 K (black symbols). The two curves depart below about 1.5 K. On the same graph are shown the real part χ′ and imaginary part χ″ of the AC susceptibility vs T at several frequencies f from 0.011 Hz (red) to 570 Hz (blue) with the intermediate frequencies 0.057, 0.21, 1.11, 5.7, 21, 57 and 111 Hz. Inset: τ vs 1/T, where τ = 1/2πf peak and f peak is the maximum of χ″(f) measured at constant temperature T. The line is a fit to an Arrhenius law τ = τ 0exp(E/T) where τ 0 = (1.2 ± 0.2) × 10−5 s and E = 4.8 ± 0.1 K. b Two-dimensional representation of a string of tetrahedra on which an elementary excitation carrying a charge q = +1 (red disc with black border) diffuses in the fragmented regime Spatial periodic potential \(V_q^\alpha \) felt by the diffusing charge and induced by the underlying static charge crystal, where α refers to the tetrahedron type: α = in carries an ordered charge \(q_o^{{\rm{in}}} = + 1\) (red) and α = out carries \(q_o^{{\rm{out}}} = - 1\) (blue)

Back to article page