Quest for frustration driven distortion in Y2(Mo2)O(7) |
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| Authors: | Sagi Eva Ofer Oren Keren Amit Gardner Jason S |
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| Institution: | Physics Department, Technion, Israel Institute of Technology, Haifa 32000, Israel. |
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| Abstract: | We investigated the nature of the freezing in the geometrically frustrated Heisenberg spin glass Y2(Mo2)O(7) by measuring the temperature dependence of the static internal magnetic field distribution above the spin-glass temperature, Tg, using the muon spin relaxation technique. The evolution of the field distribution cannot be explained by changes in the spin susceptibility alone and suggests a lattice deformation. This possibility is addressed by numerical simulations of the Heisenberg Hamiltonian with magnetoelastic coupling at T > 0. |
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