The characteristic momentum-dependent spin splitting in an altermagnet results from its special spin-group symmetry10,49, i.e., the opposite-spin sublattices are connected by a real-space rotation or mirror operation, instead of a translation or inversion. Depending on the dimensionality and lattic...
In an altermagnetic material, through the nonrelativistic altermagnetic spin-splitting effect (ASSE), a transverse spin current is generated upon charge current injection. However, it is very challenging to experimentally establish the ASSE since it is inevitably mixed with the spin Hall effect due ...
The even-in-momentum spin splitting reflects the inversion symmetry of the altermagnetic crystal. Moreover, the lowest even spin-splitting term we observe is quadratic, whereas the constant term, and—correspondingly—the spin splitting at the Γ point, vanish. This is consistent with earlier ...
In particular, we observe the distinctive splitting of an electronic band on a low-symmetry path in the Brilliouin zone that connects two points featuring symmetry-induced degeneracy. The measured large magnitude of the spin splitting of approximately 0.6 eV and the position of the band just ...
Here, THz emission from RuO2/Py bilayers is reported due to not only the relativistic ISHE but also the nonrelativistic inverse altermagnetic spin splitting effect (IASSE) in RuO2. For the (100)-oriented RuO2/Py bilayers, the THz emission is greatly enhanced owing to IAS...
The relativistic spin Hall effect and inverse spin Hall effect enable the efficient generation and detection of spin current. Recently, a nonrelativistic altermagnetic spin splitting effect (ASSE) has been theoretically and experimentally reported to generate time-reversal-odd spin current with ...
With the rise of altermagnetic (ALM) materials that exhibit similar capability of spin-polarizing electrons with ferromagnets, it is a natural question to ask whether ALM insulators or semiconductors can also act as unique barriers for the spin-splitting effect. Here, through first-principles ...
Here, using synchrotron-based angle-resolved photoemission spectroscopy (ARPES), spin-resolved ARPES and model calculations, we uncover a large altermagnetic splitting, up to ~1.0eV, near the Fermi level in CrSb. We verify its bulk-type g-wave altermagnetism through systematic three-dimensional k...
The spin correlation decays as 1 / r 3 at long distances, and its amplitude oscillates with four different periods due to the interference between the spin splitting Fermi surfaces. Moreover, the values of these periods depend on the direction of observation. Similar phenomena ...
et al. Macroscopic time reversal symmetry breaking arising from antiferromagnetic Zeeman effect. Preprint at https://arxiv.org/abs/2012.15651 (2020). Egorov, S. A. & Evarestov, R. A. Colossal spin splitting in the monolayer of the collinear antiferromagnet MnF2. J. Phys. Chem. Lett. 12,...