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场能够调控物质的状态。例如，磁场可使永磁体的磁极翻转，从而实现磁存储设备的信息写入。然而，由微观电偶极子环构成的铁轴性却是一个例外，这种隐藏的序对常规电场和磁场并不敏感。事实上，自然界中并不存在可直接调控铁轴性的天然共轭场。Zeng等在《Science》报道：当特定频率的圆偏振光（其电矢量呈环形旋转）与红外激活的晶格振动共振时，可产生用于控制铁轴性的共轭场。这一发现有望拓展多功能材料的设计空间。

, authors=null, authorsList=Zhiren He, Guru Khalsa, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=版权所有，未经授权，不得转载。, copyrightOwner=《科技导报》编辑部, extLink=null, articleAbsUrl=null, sourceXml=iAxivCzHujb0OEN/uw1wtA==, magXml=iAxivCzHujb0OEN/uw1wtA==, pdfUrl=null, pdf=t4EmMLrDqXDE4QsrhxLKmQ==, pdfFileSize=991804, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=4WXNmL7WzhqgZ98avKMHFw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=UZQCIqyY1B3JyZigTwh3Kg==, mapNumber=null, fund=null)}, authors=[Author(id=1242145581842375519, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1212342497129403029, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={CN=AuthorExt(id=1242145581905290080, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1212342497129403029, authorId=1242145581842375519, language=CN, stringName=Zhiren He, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=null, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=null), Author(id=1242145581968204642, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1212342497129403029, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={CN=AuthorExt(id=1242145582035313507, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1212342497129403029, authorId=1242145581968204642, language=CN, stringName=Guru Khalsa, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=null, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=null)], keywords=null, refs=null, funds=null, companyList=null, figs=[ArticleFig(id=1242145582203085668, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1212342497129403029, language=EN, label=null, caption=null, figureFileSmall=LgR1HOVCQu/mvBxmi5QeyQ==, figureFileBig=nQnmAizRX/4AbeZWmmoGZw==, tableContent=null), ArticleFig(id=1242145582282777445, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1212342497129403029, language=CN, label=null, caption=光调控铁轴序

注：铁轴向晶体内部存在微观的电偶极子（相距甚小的正负电荷对）环。当原子（晶格）振动与圆偏振光发生共振时，便会产生一个共轭场，在该场中，电子偶极子与光束的电场方向一致，而离子偶极子的方向则与之垂直。这一轴向共轭场由光的手性决定，且在时间反演下保持不变，从而实现了对铁轴性的直接控制。
（图片来源：《Science》）

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