Glassy Statics and Dynamics in the Chemically Ordered Pyrochlore Antiferromagnet Y 2 Mo 2 O 7
作者： J. S. Gardner , B. D. Gaulin , S.-H. Lee , C. Broholm , N. P. Raju
DOI: 10.1103/PHYSREVLETT.83.211
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摘要: Static and dynamic magnetic correlations in the geometrically frustrated pyrochlore antiferromagnet ${\mathrm{Y}}_{2}$M${\mathrm{o}}_{2}$${\mathrm{O}}_{7}$ have been studied using neutron scattering. The material is chemically ordered but displays a spin-freezing transition at ${T}_{g}\ensuremath{\sim}22.5\mathrm{K}$. We show that short range order develops below room temperature. Upon cooling two-spin correlation length never exceeds 5 \AA{}, yet spin fluctuation rate vanishes proportion to ${T\ensuremath{-}T}_{g}$. For $Tl{T}_{g}$ low energy fluctuations are replaced by static antiferromagnetic with frozen staggered magnetization $|〈\mathbf{S}〉|/S\ensuremath{\approx}0.67\left(2\right)$. Locally structure corresponds four sublattice ordering zero magnetization.
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sci-hub.se 参考文章(24)
K. H. Fischer, Spin Glasses ,(1991)
A P Ramirez, Strongly Geometrically Frustrated Magnets Annual Review of Materials Science. ,vol. 24, pp. 453- 480 ,(1994) , 10.1146/ANNUREV.MS.24.080194.002321
M.A. Subramanian, G. Aravamudan, G.V. Subba Rao, Oxide pyrochlores — A review Progress in Solid State Chemistry. ,vol. 15, pp. 55- 143 ,(1983) , 10.1016/0079-6786(83)90001-8
M. J. P. Gingras, C. V. Stager, N. P. Raju, B. D. Gaulin, J. E. Greedan, Static Critical Behavior of the Spin-Freezing Transition in the Geometrically Frustrated Pyrochlore Antiferromagnet Y 2 Mo 2 O 7 Physical Review Letters. ,vol. 78, pp. 947- 950 ,(1997) , 10.1103/PHYSREVLETT.78.947
B. D. Gaulin, J. N. Reimers, T. E. Mason, J. E. Greedan, Z. Tun, Spin freezing in the geometrically frustrated pyrochlore antiferromagnet Tb 2 Mo 2 O 7 Physical Review Letters. ,vol. 69, pp. 3244- 3247 ,(1992) , 10.1103/PHYSREVLETT.69.3244
J. N. Reimers, J. E. Greedan, R. K. Kremer, E. Gmelin, M. A. Subramanian, Short-range magnetic ordering in the highly frustrated pyrochlore Y 2 Mn 2 O 7 Physical Review B. ,vol. 43, pp. 3387- 3394 ,(1991) , 10.1103/PHYSREVB.43.3387
Y. Shimakawa, Y. Kubo, N. Hamada, J. D. Jorgensen, Z. Hu, S. Short, M. Nohara, H. Takagi, Crystal structure, magnetic and transport properties, and electronic band structure of A{sub 2}Mn{sub 2}O{sub 7} pyrochlores (A=Y,thinspIn,thinspLu, and Tl) Physical Review B. ,vol. 59, pp. 1249- 1254 ,(1999) , 10.1103/PHYSREVB.59.1249
M. J. Harris, M. P. Zinkin, Z. Tun, B. M. Wanklyn, I. P. Swainson, Magnetic structure of the spin-liquid state in a frustrated pyrochlore Physical Review Letters. ,vol. 73, pp. 189- 192 ,(1994) , 10.1103/PHYSREVLETT.73.189
S.-H Lee, C Broholm, G Aeppli, A. P Ramirez, T. G Perring, C. J Carlile, M Adams, T. J. L Jones, B Hessen, Spin-glass and non–spin-glass features of a geometrically frustrated magnet EPL. ,vol. 35, pp. 127- 132 ,(1996) , 10.1209/EPL/I1996-00543-X
C. Broholm, G. Aeppli, G. P. Espinosa, A. S. Cooper, Antiferromagnetic fluctuations and short-range order in a Kagomé lattice. Physical Review Letters. ,vol. 65, pp. 3173- 3176 ,(1990) , 10.1103/PHYSREVLETT.65.3173