Characterizing the Magnetic Interfacial Coupling of the Fe/FeGe Heterostructure by Ferromagnetic Resonance

被引：8

作者：

Xie, Zong-Kai ^{[1
,2
,3
]}

Li, Yan ^{[1
,2
,3
]}

Gong, Zi-Zhao ^{[1
,2
,3
]}

Yang, Xu ^{[1
,2
,3
]}

Li, Yang ^{[1
,2
,3
]}

Sun, Rui ^{[1
,2
,3
]}

Li, Na ^{[1
,2
,3
]}

Sun, Yun-Bing ^{[4
]}

Zhao, Jian-Jun ^{[4
]}

Cheng, Zhao-Hua ^{[1
,2
,3
]}

He, Wei ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[4] Baotou Normal Univ, Dept Phys, Baotou 014030, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 41期

关键词：

spintronics; chiral spin texture; FMR; interfacial coupling; Gilbert damping; spin current injection; DYNAMICS; FILMS;

D O I：

10.1021/acsami.0c11902

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We characterize the magnetic interfacial coupling of the Fe/FeGe heterostructure and its influence on the magnetic damping via ferromagnetic resonance in the temperature range of 200-300 K. When the temperature is below the critical temperature of FeGe, the interfacial coupling rises. The strength of the magnetic interfacial coupling is determined as a function of the temperature and reaches up to 0.194 erg/cm(2) at 200 K. Meanwhile, the Gilbert damping of the Fe layer is enhanced from 0.035 at 300 K to 0.050 at 200 K. The enhancement is linearly proportional to the strength of magnetic interfacial coupling. We attribute the enhancement to the interfacial coupling that transfers spin angular momentum from Fe to FeGe via the exchange interaction. Our results reveal that the interfacial coupling is an effective approach to inject spin current into the chiral spin texture.

引用

页码：46908 / 46913

页数：6

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