Non-Hermitian off-diagonal magnetic response of Dirac fermions
Non-Hermitian off-diagonal magnetic response of Dirac fermions
We perform a comparative study for the magnetization dynamics within linear response theory of one and two dimensional massive Dirac electrons, after switching on either a real (Hermitian) or an imaginary (non-Hermitian) magnetic field. While Hermitian dc magnetic fields polarize the spins in the direction of the external magnetic field, …