Gyrotropic Magnetic Effect and the Magnetic Moment on the Fermi Surface
Gyrotropic Magnetic Effect and the Magnetic Moment on the Fermi Surface
The current density j^{B} induced in a clean metal by a slowly-varying magnetic field B is formulated as the low-frequency limit of natural optical activity, or natural gyrotropy. Working with a multiband Pauli Hamiltonian, we obtain from the Kubo formula a simple expression for α_{ij}^{GME}=j_{i}^{B}/B_{j} in terms of the intrinsic …