The authors presented a proof of existence of weak solutions to a model for spin-polarized transport in ferromagnetic
multilayers in [1]. The proof of the previous result is valid only in the case when the external current in parallel to the boundary of the domain. We present here an extension of that result, which applies to more general currents.
C. J. García-Cervera and X. P. Wang, Spin-Polarized transport: Existence of weak solutions, Disc. Cont. Dyn. Sys., Series B, 7 (2007), 87-100.doi: 10.3934/dcdsb.2007.7.87.