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Direct demonstration of time-reversal-symmetry-breaking spin injection from a compensated magnet
Jone Mencos, Antonin Badura, Eoin Dolan +21
The injection, propagation and detection of spin currents are essential physical processes in spintronics. So far, the separation of charge and spin currents was facilitated by the…
Quantization of spin circular photogalvanic effect in altermagnetic Weyl semimetals
Hiroki Yoshida, Jan Priessnitz, Libor Šmejkal +1
We theoretically predict a spin-current analog of the quantized circular photogalvanic effect in Weyl semimetals. This phenomenon is forbidden in antiferromagnets by symmetry but u…
Quantum-impurity sensing of altermagnetic order
V. A. S. V. Bittencourt, Hossein Hosseinabadi, Jairo Sinova +2
Quantum sensing with individual spin defects has emerged as a versatile platform to probe microscopic properties of condensed matter systems. Here we demonstrate that quantum relax…
Spin Hall magnetoresistance at the altermagnetic insulator/Pt interface
Miina Leiviskä, Reza Firouzmandi, Kyo-Hoon Ahn +22
The resistance of a heavy metal can be modulated by an adjacent magnetic material through the combined effects of the spin Hall effect, inverse spin Hall effect, and dissipation of…
Transport theory and spin-transfer physics in d-wave altermagnets
Ricardo Zarzuela, Rodrigo Jaeschke-Ubiergo, Olena Gomonay +2
We develop a mesoscale transport theory for the charge and spin degrees of freedom of itinerant carriers in a -wave altermagnet. Our effective Lagrangian description is built up…
Spontaneous Crystal Thermal Hall Effect in Insulating Altermagnets
Rhea Hoyer, Rodrigo Jaeschke-Ubiergo, Kyo-Hoon Ahn +2
We show that magnetic insulators with a collinear and compensated order can exhibit a thermal Hall effect even at zero magnetic field if they have altermagnetic symmetries. We pred…