Sagi Eva, Ofer Oren, Keren Amit, Gardner Jason S
Physics Department, Technion, Israel Institute of Technology, Haifa 32000, Israel.
Phys Rev Lett. 2005 Jun 17;94(23):237202. doi: 10.1103/PhysRevLett.94.237202. Epub 2005 Jun 14.
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.
我们通过使用μ子自旋弛豫技术测量自旋玻璃温度Tg以上静态内磁场分布的温度依赖性，研究了几何受挫的海森堡自旋玻璃Y2(Mo2)O(7)中的冻结性质。场分布的演变不能仅用自旋磁化率的变化来解释，这表明存在晶格变形。通过在T>0时对具有磁弹耦合的海森堡哈密顿量进行数值模拟，探讨了这种可能性。
