The interplay between spin polarized current and magnetic moments gives rise to many challenging and intriguing phenomena. The emergence of the field of spintronics high-lighted phenomena encountered in heterostructures such as giant magnetoresistance, tun-neling magnetoressitance, spin-torque, etc. This however does not decrease the importance of studying phenomena encountered in a single compound. In our group we study such magnetoresistance effects in this films of magnetic oxides.

We study the dependence of the longitudinal resistivity and that of the transverse resistivity on the orientations of the current density and the magnetization. These effects are known as anisotropic magnetoresistance (AMR) and planar Hall effect (PHE), respectively. We also consider the effect of crystal symmetry on these effects.

We study the contribution of the magnetic moment to the Hall effect. This effect is known as anomalous Hall effect (AHE). The AHE has attracted increasing interest in recent years some of which is probably due to its relation to the spin Hall effect and inverse spin Hall effect which are relevant to novel spintronic devices.

N. Haham, M. Konczykowski, B. Kuiper, G. Koster, and L. Klein,  Testing dependence of anomalous Hall effect on resistivity in SrRuO3 by its increase with electron irradiation, Phys. Rev. B 88, 214431 (2014).

Naftalis, N. Haham, J. Hoffman, M. S. J. Marshall, C. H. Ahn and L. Klein, Out of plane anisotropic magnetoresistance and planar Hall effect in epitaxial film of La(0.8)Sr(0.2)MnO(3), J. Appl. Phys. 115, 053709 (2014).

Noam Haham, Yishai Shperber, James W. Reiner, and Lior Klein, Low-temperature anisotropic magnetoresistance and planar Hall effect in SrRuO3, Phys. Rev. B 87, 144407 (2013).

Naftalis,Y. Shperber, J. A. Moyer, C. H. Ahn, and L. Klein, Thickness dependence of the resistivity tensor in epitaxial magnetite thin films, J. Appl. Phys. 114, 043701 (2013).

Noam Haham, James W. Reiner, and Lior Klein, Scaling of the paramagnetic anomalous Hall effect in SrRuO₃, Phys. Rev. B 86, 144414 (2012).

Netanel Naftalis, Noam Haham,Jason Hoffman, Matthew S. J. Marshall, C. H. Ahn, and Lior Klein,Angular dependence of the Hall effect of La_0.8Sr_0.2MnO₃ films, Phys. Rev. B 86, 184402 (2012).

Noam Haham, Yishai Shperber, Moty Schultz, Netanel Naftalis, Efrat Shimshoni, James W. Reiner, and Lior Klein, Scaling of the anomalous Hall effect in SrRuO₃, Phys. Rev. B 84, 174439 (2011).

Naftalis, A. Kaplan, M. Schultz, C. A. F. Vaz, J. A. Moyer, C. H. Ahn, and L. Klein, Field-dependent anisotropic magnetoresistance and planar Hall effect in epitaxial magnetite thin films, Phys. Rev. B 84, 094441 (2011).

Naftalis, Y. Bason, J. Hoffman, X. Hong, C. H. Ahn, and L. Klein, Anisotropic magnetoresistance and planar Hall effect in epitaxial films ofLa0.7Ca0.3MnO3, J. App. Phys. 106, 023916 (2009).

Y. Bason, J. Hoffman, C. H. Ahn, and L. Klein, Magnetoresistance tensor of La_0.8Sr_0.2MnO₃, Phys. Rev. B 79, 092406 (2009).