Detection of uncompensated magnetization at the interface of an epitaxial antiferromagnetic insulator
Detection of uncompensated magnetization at the interface of an epitaxial antiferromagnetic insulator
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外延反铁磁绝缘体界面处未补偿磁化强度的检测
DOI:
10.1103/physrevb.102.174406
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发表时间:
2020
影响因子:
3.7
通讯作者:
Schuller, Ivan K.
中科院分区:
文献类型:
--
作者:
Lapa, Pavel N.;Lee, Min-Han;Roshchin, Igor V.;Belashchenko, Kirill D.;Schuller, Ivan K.
We have probed directly the temperature and magnetic field dependence of pinned uncompensated magnetization at the interface of antiferromagneticwith Cu, usingspin valves. Electrons polarized by the Co layer are scattered by the pinned uncompensated moments at theinterface giving rise to giant magnetoresistance. We determined the direction and magnitude of the pinned uncompensated magnetization at different magnetic fields and temperatures using the angular dependencies of resistance. The stronganisotropy pins the uncompensated magnetization along the easy axis independent of the cooling field orientation. Most interestingly, magnetic fields as high as 90 kOe cannot break the pinning at theinterface. This proves that the pinned interfacial magnetization is strongly coupled to the antiferromagnetic order inside the bulklayer. Studies as a function ofcrystalline orientation show that uncompensated spins are only detected in a spin valve with (110) crystal orientation, but not in valves containingand. This observation is in agreement with symmetry-related considerations which predict the equilibrium boundary magnetization for thelayer.
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影响因子:
4
作者:
I. Zhuravlev;A. Adhikari;K. Belashchenko
通讯作者:
K. Belashchenko
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
J. Olamit;Zhi;I. Schuller;Kai Liu
通讯作者:
Kai Liu
影响因子:
1.3
作者:
Andreev, AF
通讯作者:
Andreev, AF
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
V. Jaccarino;A. King;M. Motokawa;T. Sakakibara;M. Date
通讯作者:
M. Date
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
S. Rezende
通讯作者:
S. Rezende