中国物理B ›› 2019, Vol. 28 ›› Issue (9): 97501-097501.doi: 10.1088/1674-1056/ab37f7

• SPECIAL TOPIC-110th Anniversary of Lanzhou University • 上一篇    下一篇

Dynamical anisotropic magnetoelectric effects at ferroelectric/ferromagnetic insulator interfaces

Yaojin Li(李耀进), Vladimir Koval, Chenglong Jia(贾成龙)   

  1. 1 Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China;
    2 Electronic Materials Research Laboratory International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China;
    3 Institute of Materials Research, Slovak Academy of Sciences Watsonova 47, 04001 Kosice, Slovakia
  • 收稿日期:2019-06-07 修回日期:2019-07-19 出版日期:2019-09-05 发布日期:2019-09-05
  • 通讯作者: Chenglong Jia E-mail:cljia@lzu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474138 and 11834005), the Fund from the Ministry of Science and Technology of China (Grant No. CN-SK-8-4), the Science Foundation from the Slovak Academy of Sciences (Grant No. 2/0059/17), and the Science Fund from the Slovak Research and Development Agency (Grant No. APVV SK-CN-2017-0004).

Dynamical anisotropic magnetoelectric effects at ferroelectric/ferromagnetic insulator interfaces

Yaojin Li(李耀进)1,2, Vladimir Koval3, Chenglong Jia(贾成龙)1   

  1. 1 Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China;
    2 Electronic Materials Research Laboratory International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China;
    3 Institute of Materials Research, Slovak Academy of Sciences Watsonova 47, 04001 Kosice, Slovakia
  • Received:2019-06-07 Revised:2019-07-19 Online:2019-09-05 Published:2019-09-05
  • Contact: Chenglong Jia E-mail:cljia@lzu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474138 and 11834005), the Fund from the Ministry of Science and Technology of China (Grant No. CN-SK-8-4), the Science Foundation from the Slovak Academy of Sciences (Grant No. 2/0059/17), and the Science Fund from the Slovak Research and Development Agency (Grant No. APVV SK-CN-2017-0004).

摘要:

The interfacial magnetoelectric interaction originating from multi-orbital hopping processes with ferroelectric-associated vector potential is theoretically investigated for complex-oxide composite structures. Large mismatch in the electrical permittivity of the ferroelectric and ferromagnetic materials gives rise to giant anisotropic magnetoelectric effects at their interface. Our study reveals a strong linear dynamic magnetoelectric coupling which genuinely results in electric control of magnetic susceptibility. The constitutive conditions for negative refractive index of multiferroic composites are determined by the analysis of light propagation.

关键词: interfacial magnetoelectric effect, ferromagnetic insulator, magnetic susceptibility, refractive index

Abstract:

The interfacial magnetoelectric interaction originating from multi-orbital hopping processes with ferroelectric-associated vector potential is theoretically investigated for complex-oxide composite structures. Large mismatch in the electrical permittivity of the ferroelectric and ferromagnetic materials gives rise to giant anisotropic magnetoelectric effects at their interface. Our study reveals a strong linear dynamic magnetoelectric coupling which genuinely results in electric control of magnetic susceptibility. The constitutive conditions for negative refractive index of multiferroic composites are determined by the analysis of light propagation.

Key words: interfacial magnetoelectric effect, ferromagnetic insulator, magnetic susceptibility, refractive index

中图分类号:  (Saturation moments and magnetic susceptibilities)

  • 75.30.Cr
75.50.Dd (Nonmetallic ferromagnetic materials) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))