Possible role of toroidal moments and Dzyaloshinskii-Moriya interaction in the magnetoelectric effect of the hyperkagome compound Mn3Al2Ge3O12

被引：0

作者：

Tan, Leili ^{[1
]}

Ma, Guoqing ^{[1
]}

Zheng, Shuhan ^{[1
]}

Liu, Meifeng ^{[1
,2
]}

Min, Jiahua ^{[1
]}

Zhang, Junhu ^{[3
]}

Li, Yao ^{[1
,3
]}

Xie, Yunlong ^{[1
,3
]}

Ma, Zhen ^{[1
]}

Zhang, Yongjun ^{[1
]}

Lin, Lin ^{[4
]}

Wang, Xiuzhang ^{[1
]}

Li, Hong ^{[1
]}

Dong, Shuai ^{[5
]}

Liu, Jun-Ming ^{[1
,3
]}

机构：

[1] Hubei Normal Univ, Sch Mat Sci & Engn, Hubei Key Lab Photoelect Mat & Devices, Huangshi 435002, Peoples R China

[2] Hubei Normal Univ, Coll Phys & Elect Sci, Huangshi 435002, Peoples R China

[3] Nanjing Univ, Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[4] Nanjing Forestry Univ, Dept Appl Phys, Coll Sci, Nanjing 210037, Peoples R China

[5] Southeast Univ, Minist Educ, Sch Phys, Key Lab Quantum Mat & Devices, Nanjing 211189, Peoples R China

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 24期

基金：

中国国家自然科学基金;

关键词：

MAGNETIC-PROPERTIES; CRYSTAL-GROWTH; LATTICE; NA2CO2TEO6; ORIGIN; ORDER;

D O I：

10.1103/PhysRevB.110.245116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetoelectric (ME) effects originating from exotic magnetic states provide opportunities to explore novel topics such as topology and intriguing excitation. Herein, we report the ME effect in a cubic garnet Mn3Al2Ge3O12 with comprehensive magnetic and ferroelectric measurements. Our results reveal the dominant ME coefficient alpha with magnetic field perpendicular to electric field, in which electric polarization along the [110] axis is the strongest. We also observed a transition of coefficient alpha from negative to positive value upon switching of magnetic field. It is suggested that the ME effect of Mn3Al2Ge3O12 originates from the combination of special hyperkagome lattice and 120 degrees magnetic configuration, which leads to a -3' magnetic point group. The microscopic mechanism of the ME effect is discussed from viewpoints of toroidal moments and inverse Dzyaloshinskii-Moriya interaction. This work provides a scenario for understanding ME effect and further exploring the exotic state of Mn3Al2Ge3O12 and other garnets.

引用

页数：9

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