Spintronics is a multidisciplinary field whose central theme is the active manipulation of spin degrees of freedom in solid-state systems. The core magnetic system for spintronics research has been ferromagnets since they serve as spin-polarizers/detectors and offer non-volatile memory and logic technologies. Recently, much effort has been expended in employing antiferromagnets and ferrimagnets as core elements in spintronic applications because of their fast dynamics. This talk will discuss the underlying mechanism of fast dynamics of compensated and uncompensated staggered moments, driven by magnetic fields or spin-transfer torques [1-6].

References

[1] T. Shiino et al, Phys. Rev. Lett. 117, 087203 (2016).

[2] S. K. Kim, K.-J. Lee, and Y. Tserkovnyak, Phys. Rev. B 95, 140404(R) (2017).

[3] S.-H. Oh et al., Phys. Rev. B 96, 100407(R) (2017).

[4] K.-J. Kim et al., Nat. Mater. 16, 1187 (2017).

[5] J. Yu et al., Nat. Mater. 18, 29 (2019).

[6] Y. Hirata et al., Nat. Nanotechnol. 14, 232 (2019).