强磁场下氮掺杂金刚石中法拉第旋转效应的偏振太赫兹时域光谱测量  

Faraday rotation in nitrogen-doped diamond measured by polarized terahertz time-domain spectroscopy in the presence of strong magnetic field

作　　者：肖欢 温华 徐文 张晶 程兴佳 肖宜明 丁岚 李浩文 程衍喆 何斌 XIAO Huan;WEN Hua;XU Wen;ZHANG Jing;CHENG Xing-Jia;XIAO Yi-Ming;DING Lan;LI Hao-Wen;CHENG Yan-Zhe;HE Bin(School of Physics and Astronomy and Yunnan Key laboratory of Quantum Information,Yunnan University,Kunming 650091,China;Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;Micro Optical Instruments Inc.,Shenzhen 518118,China;Chongqing Qrigin Crystal Science&Technology Development Co.LTD,Chongqing 400030,China;College of New Materials and New Energies,Shenzhen Technology University,Shenzhen 515118,China)

机构地区：[1]云南大学物理与天文学院云南省量子信息重点实验室,云南昆明650091 [2]中国科学院合肥物质科学研究院固体物理研究所,安徽合肥230031 [3]深圳网联光仪科技有限公司,广东深圳518118 [4]重庆启晶科技发展有限公司,重庆400030 [5]深圳技术大学新材料与新能源学院,广东深圳515118

出　　处：《红外与毫米波学报》2023年第6期756-762,共7页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(U2230122,U2067207,12004331);深圳市科技计划资助(KQTD20190929173954826,20220716001753001,SZWD2021015);广东省高校晶体生长与应用工程技术研究中心(2020GCZX005);深圳技术大学校企合作项目(2021010802002)。

摘　　要：氮掺杂金刚石(N-D)是最重要的碳基电子材料之一,由于氮相关色心的存在,其具有许多有趣而独特的物理特征。文章中研究了等离子体化学气相沉积法生长的N-D样品的太赫兹(THz)磁光特性。应用偏振THz时域光谱(THz TDS)技术,在0~8 T磁场和80 K温度条件下,测量了N-D样品在法拉第几何结构下的THz透射光谱,得到了N-D材料的法拉第旋转角和椭偏率、复横向(或霍尔)磁光电导率以及复左、右旋介电常数随磁场的变化规律。结果表明,N-D材料具有优良的THz磁光法拉第旋光效应,可应用于THz旋光器件。Nitrogen(N)-doped diamond(N-D)is one of the most important carbon-based electronic materials and has many interesting and unique features in terms of physics owing to the presence of N related color centers.In this paper,the terahertz(THz)magneto-optical(MO)properties of N-D grown by microwave plasma chemical vapor deposition(MPCVD)are investigated.By using polarized THz time-domain spectroscopy(TDS)in the presence of magnetic field from 0 to 8 T,the THz transmission through an N-D sample in Faraday geometry is measured at 80 K.The dependence of the Faraday rotation angle and ellipticity,the complex transverse or Hall MO conductivity and the complex dielectric constant upon the magnetic field for N-D are examined.The results show that N-D has excellent THz MO Faraday rotation effect and can be applied as THz rotatory material.

关 键 词：氮掺杂金刚石 磁光特性 太赫兹时域光谱 

分 类 号：O469[理学—凝聚态物理]