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Published on: October 5, 2013
Hidden fully-compensated ferrimagnetism
1School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China. sandongyuwang@163.com.
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Incorporating zero-net-magnetization magnets that exhibit spin-splitting into spintronics delivers key advantages: faster switching dynamics, greater immunity to destabilizing fields, lower power consumption, and markedly improved overall efficiency. Collinear magnets with net-zero magnetization and spin-splitting mainly include altermagnets and fully-compensated ferrimagnets, which provide the possibility to achieve hidden spin polarization with net-zero spin polarization in total but non-zero local spin polarization. In addition to the proposal of hidden altermagnetism, we hereby introduce the concept of hidden fully-compensated ferrimagnetism, where the total spin polarization is zero, but either of the two inversion-partner sectors possesses fully-compensated ferrimagnetism with non-zero local spin polarization in real space. Via first-principles calculations, we predict that PT-bilayer CrMoC2S6 may exhibit hidden fully-compensated ferrimagnetism, showing fully-compensated ferrimagnetic hidden spin splitting, which can be separated and observed via an out-of-plane external electric field. Our work provides a class of materials with hidden spin-polarization that facilitate the advancement of spintronics.
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