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化学和水静压诱导 [公式:参阅文本] [公式:参阅文本] 单晶中的金属化

Tayyaba Hussain¹, Joonyoung Choi¹, Mariam Omran¹

¹Department of Physics, Kyungpook National University, Daegu, 41566, Republic of Korea.

Scientific reports

|March 13, 2026

概括

化学替代,如,在强相关的系统中,在驱动绝缘体到金属过渡 (MIT) 时比压力更有效. 这项研究提供了关于设计功能性Mott材料的见解.

科学领域:

凝聚物质物理学凝聚物质物理学
材料科学材料科学材料科学

背景情况:

强烈相关的系统表现出对外部参数敏感的电子特性.
调整这些参数是理解和控制材料相的关键.

研究的目的:

在不同的压力和化学成分下,研究绝缘体到金属的过渡 (MIT) 在[公式:见文本][公式:见文本]中.
确定水静压与化学替代在诱导金属化中的相对有效性.

主要方法:

在[公式:参见文本]的广泛组成范围内应用了水静电和化学压力.
监控电子状态和过渡温度的变化.
构建了一个统一的压力-兴奋剂-温度相位图.

主要成果:

纯 [公式:参见文本] 在压力下显示其弱铁磁过渡温度的变化.
对于[公式:参见文本][公式:参见文本]而言,金属化发生在1.3 kbar,对于轻微合的样品,需要更高的压力.
在[公式:参见文本]出现了一个金属状态,仅仅是通过Se替代,没有外部压力.

结论:

替代比水静压更有效地促进 [公式:见文本] [公式:见文本]中的金属化.
化学替代影响了超越格子参数的多种材料特性.
构建的相位图为相关性驱动的 MIT 提供了洞察力,并指导了 Mott 系统的设计.

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