论文信息 - Dynamical Magnetic Properties of BaCo1-xNixS2 near the Mott Transitions Induced by Pressure and Carrier-Number Control.

Dynamical Magnetic Properties of BaCo1-xNixS2 near the Mott Transitions Induced by Pressure and Carrier-Number Control.

Dynamical magnetic properties of BaCoS 2 which has a layered structure and exhibits Mott metal-insulator (M-I) transition with the Ni-substitution for Co and/or with increasing external pressure p , have been studied by means of neutron inelastic scattering in the pressure range of \(0{\lesssim}p{\lesssim}15\) kbar. By comparing the results with those of BaCo 0.82 Ni 0.18 S 2 , we find that characteristics of the magnetic fluctuations near the two M-I transitions induced by pressure and by the Ni-substitution for Co are rather different, even when they are compared under the conditions of similar Neel temperatures and similar antiferromagnetic staggered moments at low temperatures.

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