Finite Size Effects on Phase Transitions using Spin Glasses

使用旋转玻璃对相变的有限尺寸效应

• 批准号: 8819429
• 负责人: Jerry Cowen
• 金额: $ 18.01万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-15 至 1992-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8819429&HistoricalAwards=false
• 关键词: Finite; Size; Effects; Phase; Transitions

They will complete investigations of how finite size scaling bahavior and the reduction in spin-freezing temperature Tg with decreasing sample thickness L in copper manganese depend upon different manganese concentrations, different interlayer materials, and different sample preparation conditions. They will begin studies of how reducing L affects dynamical properties such as irreversibility and relaxation phenomena in copper manganese below Tg and begin studies of the 3D to 2D crossover in spin-glasses other than copper manganese. They will also measure ac susceptibility in collaboration with L.P. Levy.

他们将完成对有限尺寸缩放 BaCl_3和旋转冻结温度Tg的降低， 降低铜锰中的样品厚度L取决于 不同锰浓度、不同夹层 材料和不同的样品制备条件。 他们 我将开始研究减小L对动力学性质的影响 例如铜中不可逆性和弛豫现象 锰低于Tg，并开始研究3D到2D的交叉， 除了铜锰之外的自旋玻璃。 他们还将衡量 与L.P. Levy合作的ac易感性。