中国物理B ›› 2022, Vol. 31 ›› Issue (10): 107502-107502.doi: 10.1088/1674-1056/ac7f8b

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Terahertz magnetic resonance in MnCr2O4 under high magnetic field

Peng Zhang(张朋)1,†, Kaibo He(贺凯博)1, Zheng Wang(王铮)1, Shile Zhang(张仕乐)2, Jianming Dai(戴建明)3, and Fuhai Su(苏付海)3,‡   

  1. 1. Department of Physics, Laboratory of Functional Materials and Device for Informatics, Fuyang Normal University, Fuyang 236037, China;
    2. Anhui Provincial Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Hefei Institute of Physical Science (HFIPS), Chinese Academy of Sciences, Hefei 230031, China;
    3. Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
  • 收稿日期:2022-04-12 修回日期:2022-07-03 出版日期:2022-10-16 发布日期:2022-09-30
  • 通讯作者: Peng Zhang, Fuhai Su E-mail:zpzp@mail.ustc.edu.cn;fhsu@issp.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12174398 and 51727806), the Natural Science Research Project of the Education Department of Anhui Province, China (Grant No. KJ2021A0679), the Natural Science Foundation of Fuyang Normal University (Grant No. rcxm202107), and the Cooperative Research Project of Fuyang Normal University and Fuyang Municipal Government (Grant No. SXHZ202012).

Terahertz magnetic resonance in MnCr2O4 under high magnetic field

Peng Zhang(张朋)1,†, Kaibo He(贺凯博)1, Zheng Wang(王铮)1, Shile Zhang(张仕乐)2, Jianming Dai(戴建明)3, and Fuhai Su(苏付海)3,‡   

  1. 1. Department of Physics, Laboratory of Functional Materials and Device for Informatics, Fuyang Normal University, Fuyang 236037, China;
    2. Anhui Provincial Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Hefei Institute of Physical Science (HFIPS), Chinese Academy of Sciences, Hefei 230031, China;
    3. Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
  • Received:2022-04-12 Revised:2022-07-03 Online:2022-10-16 Published:2022-09-30
  • Contact: Peng Zhang, Fuhai Su E-mail:zpzp@mail.ustc.edu.cn;fhsu@issp.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12174398 and 51727806), the Natural Science Research Project of the Education Department of Anhui Province, China (Grant No. KJ2021A0679), the Natural Science Foundation of Fuyang Normal University (Grant No. rcxm202107), and the Cooperative Research Project of Fuyang Normal University and Fuyang Municipal Government (Grant No. SXHZ202012).

摘要: Terahertz (THz) time-domain spectroscopy (THz-TDS) of polycrystalline MnCr2O4 was performed at <9 T and low temperatures. A resonance absorption in the sub-THz range with linear blueshifts was observed as the magnetic field was increased from 4 T to 9 T. These magnetism-driven absorptions originated from a ferromagnetic resonance, which agrees with low-field electron spin resonance measurements and ferromagnetic resonance theory. The low-temperature g-factors of MnCr2O4 were also obtained using THz-TDS. This work provides new insights into the spin dynamics of chromite spinel compounds in the THz region.

关键词: chromium spinel, terahertz time-domain spectroscopy, ferromagnetic resonance

Abstract: Terahertz (THz) time-domain spectroscopy (THz-TDS) of polycrystalline MnCr2O4 was performed at <9 T and low temperatures. A resonance absorption in the sub-THz range with linear blueshifts was observed as the magnetic field was increased from 4 T to 9 T. These magnetism-driven absorptions originated from a ferromagnetic resonance, which agrees with low-field electron spin resonance measurements and ferromagnetic resonance theory. The low-temperature g-factors of MnCr2O4 were also obtained using THz-TDS. This work provides new insights into the spin dynamics of chromite spinel compounds in the THz region.

Key words: chromium spinel, terahertz time-domain spectroscopy, ferromagnetic resonance

中图分类号:  (Studies of specific magnetic materials)

  • 75.50.-y
78.47.J- (Ultrafast spectroscopy (<1 psec)) 76.50.+g (Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)