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摘要翻译：
介绍了一种定量测量系统相分离趋势的方法，该方法适用于由载流子浓度控制的相变或交叉系统。该测度是在对自由能的各种贡献的定量知识不完全的情况下设计的，并用于评估高温铜酸盐超导体中与反铁磁关联开始相关的电子相分离的机会。以镧基和钇基铜酸盐的实验现象学作为该分析的输入。同时指出，电荷载流子之间的库仑斥力在1-3个晶格周期的间隔下，通过加速反铁磁关联的衰减，增强了相分离的趋势。总体上，本分析表明，铜盐接近相分离阈值--纳米级有限的，甚至宏观的，电荷密度在相邻晶面之间变化。
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英文标题：
《Phase separation in the vicinity of "quantum critical" doping
concentration: implications for high temperature superconductors》
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作者：
Boris V. Fine and Takeshi Egami
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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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一级分类：Physics 物理学
二级分类：Superconductivity 超导电性
分类描述：Superconductivity: theory, models, experiment. Superflow in helium
超导：理论，模型，实验。氦中超流
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英文摘要：
A general quantitative measure of the tendency towards phase separation is introduced for systems exhibiting phase transitions or crossovers controlled by charge carrier concentration. This measure is devised for the situations when the quantitative knowledge of various contributions to free energy is incomplete, and is applied to evaluate the chances of electronic phase separation associated with the onset of antiferromagnetic correlations in high-temperature cuprate superconductors. The experimental phenomenology of lanthanum- and yittrium-based cuprates was used as input to this analysis. It is also pointed out that Coulomb repulsion between charge carriers separated by the distances of 1-3 lattice periods strengthens the tendency towards phase separation by accelerating the decay of antiferromagnetic correlations with doping. Overall, the present analysis indicates that cuprates are realistically close to the threshold of phase separation -- nanoscale limited or even macroscopic with charge density varying between adjacent crystal planes.
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PDF链接：
https://arxiv.org/pdf/707.3994
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