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(综述)电子科技大学/南京大学Nat. Rev. Phys.: 交叉探测范德华多铁材料

  • 2026-07-13 09:35:44
(综述)电子科技大学/南京大学Nat. Rev. Phys.: 交叉探测范德华多铁材料
2026年5月15日,Nat. Rev. Phys.在线发表了电子科技大学邓龙江院士、彭波教授、南京大学袁洪涛教授、新加坡国立大学Kian Ping Loh和首尔国立大学Je-Geun Park课题组的综述论文,题目为《Cross-probing van der Waals multiferroics》。

多铁材料具有相互耦合的电序和磁序,通过用电场替代电流来实现磁翻转,有望推动低功耗存储和逻辑器件的发展。将多铁材料的维度从三维降低到二维,进一步拓展了这一本就蓬勃发展的领域:在原子级薄的极限下,静电屏蔽效应减弱、量子涨落增强,从而能够实现对磁电耦合前所未有的调控能力。

一个典型的例子是少层NiI2多铁材料,它同时具有手性自旋纹理和(反)铁电性,并伴随着强烈的磁电耦合;通过同时打破时间反演对称性和空间反演对称性,NiI2展现出新的物理特性,例如手性磁性与极化的独特相互控制、巨磁电耦合、超快电磁子激发以及奇宇称p波磁性。然而,如何在实验中明确识别本征的多铁性仍然存在挑战。

在此综述中,作者批判性地审视了当前二维多铁材料的研究现状,重点关注实验方法而非材料分类。评估了用于探测磁性和铁电性的不同传统手段,并指出单一技术方法的关键局限性。同时强调磁-光-电交叉关联测量在确立本征多铁行为中的重要性,并为基础研究和器件应用指明了未来的发展方向。

关键点:

1. 二维范德华单相多铁材料在原子尺度上为研究磁性、铁电性及其相互耦合提供了前所未有的机遇,使得通过电场等外部手段实现调控和翻转成为可能,并具有广泛的应用前景。

2. 同时打破时间反演对称性和空间反演对称性——这是单相多铁材料的一个典型特征——给实验鉴定带来了根本性的挑战,常常使得那些假设铁性序彼此独立的技术方法失效。

3. 传统的表征方法如果只针对磁性或铁电序进行测量,在存在交叉耦合时可能会产生具有误导性的信号,从而导致假阳性结果。

4. 磁-光-电交叉关联测量对于解析相互纠缠的铁性响应、揭示磁序与电序之间的相互调控,以及在二维材料中确立本征多铁性至关重要。


图1 多铁材料中磁序诱导的光学特征
图2 多铁材料中铁电极化诱导的光学特征
图3 多铁材料的电学特征
图4 多铁材料的磁-光-电交叉探测
图5 多铁材料的光-自旋电子学测量

论文链接
Peng, B., Li, Z., Wang, H. et al. Cross-probing van der Waals multiferroics. Nat. Rev. Phys., 2026. https://doi.org/10.1038/s42254-026-00944-7

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  1. CONNECT:[ UseTime:0.000710s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000838s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000351s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000312s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000523s ]
  6. SELECT * FROM `set` [ RunTime:0.000194s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000597s ]
  8. SELECT * FROM `article` WHERE `id` = 574820 LIMIT 1 [ RunTime:0.010392s ]
  9. UPDATE `article` SET `lasttime` = 1784263851 WHERE `id` = 574820 [ RunTime:0.011019s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000794s ]
  11. SELECT * FROM `article` WHERE `id` < 574820 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001087s ]
  12. SELECT * FROM `article` WHERE `id` > 574820 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002735s ]
  13. SELECT * FROM `article` WHERE `id` < 574820 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003104s ]
  14. SELECT * FROM `article` WHERE `id` < 574820 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002001s ]
  15. SELECT * FROM `article` WHERE `id` < 574820 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.037921s ]
0.168986s