摘要翻译:
在许多磁一级跃迁中都观察到了类似玻璃的动力学停滞现象。通过穿越两个控制变量H-T空间,观察到了可调谐的阻滞相和平衡相共存分数。我们在这里报告了半掺杂锰酸盐样品中的一个偶然情况,其中这些特征是通过沿H=0线仅改变温度(T)而发生的。当第二次冷却是由一个特定的中间T影响时,5K时的电阻率增加了三倍以上。这种显著的提高是由于在第一次冷却时动力学停止的区域在第二次冷却时的非均匀形核。
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英文标题:
《Enhancement of equilibrium fraction by heterogeneous nucleation in a
"phase separated" half-doped manganite》
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作者:
P. Chaddah, Kranti Kumar and A. Banerjee
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Strongly Correlated Electrons 强关联电子
分类描述:Quantum magnetism, non-Fermi liquids, spin liquids, quantum criticality, charge density waves, metal-insulator transitions
量子磁学,非费米液体,自旋液体,量子临界性,电荷密度波,金属-绝缘体跃迁
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
Glass-like arrest of kinetics has been observed across many magnetic first-order transitions. By traversing the two control variable H-T space, tunable coexisting fractions of arrested and equilibrium phases have been observed. We report here a fortuitous situation in a half-doped manganite sample, where these features occur by varying only temperature (T) along the H=0 line. The resistivity at 5 K rises by more than a factor of three provided second cool-down is effected from a specified intermediate T. This significant enhancement results from heterogeneous nucleation during second cool-down of regions that were kinetically arrested during first cool-down.
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PDF链接:
https://arxiv.org/pdf/710.0263