Fyzikální ústav Akademie věd ČR

Although antiferromagnets have been known for about eighty years, their (spin) transport properties have only attracted interest lately. This is because it was believed to be difficult to manipulate and to detect the magnetic state of antiferromagnets. However, large magnitude anisotropic magneto-resistance effects in the tunnelling transport regime have indicated the possibility to detect antiferromagnetic order electrically. Apart from spin transfer torque (STT), also relativistic current induced spin-orbit torque (SOT) effects due to the inverse spin Galvanic effect and/or the Spin Hall effect can be used to manipulate magnetic moments.
In my talk I will discuss potentially large magnitude magneto resistance and current induced SOT effects able to detect and to manipulate potentially fast and magnetic field independent the staggered magnetic order of antiferromagnets.