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Homogeneous Reduced Moment in a Gapful Scalar Chiral Kagome Antiferromagnet



A. Scheie, S. Dasgupta, M. Sanders, A. Sakai, Y. Matsumoto, Timothy R Prisk, S. Nakatsuji, R. J. Cava, Collin L. Broholm


We present a quantitative experimental investigation of the scalar chiral magnetic order with in Nd3Sb3Mg2O14. Static magnetization reveals a net ferromagnetic ground state, and inelastic neutron scattering from the hyperfine coupled nuclear spin reveals a local ordered moment of 1.76(6) υB, just 61(2)% of the saturated moment size. The experiments exclude static disorder as the source of the reduced moment. A 38(1) υeV gap in the magnetic excitation spectrum inferred from heat capacity rules out thermal fluctuations and suggests a multipolar explanation for the moment reduction. We compare Nd3Sb3Mg2O14 to Nd pyrochlores and show that Nd2Zr2O7 is in a spin fragmented state using nuclear Schottky heat capacity.
Physical Review B


Scheie, A. , Dasgupta, S. , Sanders, M. , Sakai, A. , Matsumoto, Y. , Prisk, T. , Nakatsuji, S. , Cava, R. and Broholm, C. (2019), Homogeneous Reduced Moment in a Gapful Scalar Chiral Kagome Antiferromagnet, Physical Review B, [online], (Accessed May 21, 2024)


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Created July 11, 2019, Updated October 12, 2021