One Dimensional(1D)-to-2D Crossover of Spin Correlations in the 3D Magnet ZnMn2O4

Published

December 8, 2015

Author(s)

Steven M.T. Disseler, Ying Chen, S. Yeo, G. Gasparovic, P.M.B. Piccoli, A. J. Schultz, Yiming Qiu, Qingzhen Huang, S.-W. Cheong, William D. Ratcliff

Abstract

We report on the intriguing evolution of the dynamical spin correlations of the frustrated spinel ZnMn₂O₄. Inelastic neutron scattering and magnetization studies reveal that the dynamical correlations at high temperatures are 1D. At lower temperature, these dynamical correlations become 2D. Surprisingly, the dynamical correlations condense into a quasi 2D Ising-like ordered state, making this a rare observation of two dimensional order on the spinel lattice. Remarkable, 3D ordering is not observed down to temperatures as low as 300 mK. This unprecedented dimensional crossover stems from frustrated exchange couplings due to the huge Jahn-Teller distortions around Mn^3+^ ions on the spinel lattice.

Citation

Scientific Reports

Volume

5

Issue

17771

Pub Type

Journals

Download Paper

https://doi.org/10.1038/srep17771

Keywords

Frustrated Magnetism, Neutron Scattering, Spinel

Citation

, S. , Chen, Y. , Yeo, S. , Gasparovic, G. , Piccoli, P. , , A. , Qiu, Y. , Huang, Q. , Cheong, S. and , W. (2015), One Dimensional(1D)-to-2D Crossover of Spin Correlations in the 3D Magnet ZnMn₂O₄, Scientific Reports, [online], https://doi.org/10.1038/srep17771 (Accessed December 14, 2024)