Fig. 4: Antiferromagnetic resonance (AFMR) with spin–circuits.
From: Connecting physics to systems with modular spin-circuits
a Sketch of an antiferromagnet where two sublattices with opposing magnetizations. b Spin circuit model of the AFM with two antiferromagnetic layers analyzed by two LLGs coupled with exchange interactions. c Experimental results for AFMR in \({{\mathsf{MnF}}}_{2}\)58. d Numerical results obtained from spin–circuits for AFMR, compared to known theory. e Easy-axis (z) component of the magnetization vector analysis over an external magnetic field applied in the +z direction. At a critical field, the sublattice spins enter the “spin–flop” region, where they both develop a small mz component in the direction of the magnetic field. In all cases, spin–circuits provide excellent agreement with known theory.
