arXiv subjects

Netanel Naftalis

Publications and source records attributed to Netanel Naftalis.

4 recordsLinked to original sources

arXiv2013

Thermally assisted current-induced magnetization reversal in SrRuO3

We inject a sequence of 1 ms current pulses into uniformly magnetized patterns of the itinerant ferromagnet SrRuO3 until a magnetization reversal is detected. We detect the effective temperature during the pulse and find that the cumulative pulse time required to induce magnetization reversal depends exponentially on 1/T. In addition, we find that the cumulative pulse time also depends exponentially on the current amplitude. These observations indicate current-induced magnetization reversal assisted by thermal fluctuations.

cond-mat.mtrl-sci↗

arXiv2012

Angular dependence of the Hall effect of lsmo films

We find that the Hall effect resistivity ($ρ_{xy}$) of thin films of \lsmo\ varies as a function of the angle $θ$ between the applied magnetic field and the film normal as $ρ_{xy}=a\cos θ+ b\cos 3θ$, where $|b|$ increases with increasing temperature and decreases with increasing magnetic field. We find that the angular dependence of the longitudinal resistivity and the magnetization cannot fully explain the surprising term $b$, suggesting it is a manifestation of an intrinsic transport property.

cond-mat.str-el↗

arXiv2011

Scaling and field-induced crossover of the anomalous Hall effect in SrRuO3

We measure the anomalous Hall effect (AHE) resistivity $ρ_{xy}$ in thin films of the itinerant ferromagnet SrRuO$_{3}$. At low temperatures, the AHE coefficient $R_{s}$ varies with $ρ_{xx}^2$ in agreement with side jumps and Berry phase models. At higher temperatures, $R_{s}$ reaches a peak and then changes sign just below $T_{c}$. We find that for all films studied $R_{s}$ scales with resistivity in the entire ferromagnetic phase. SrRuO$_{3}$ films with very low residual resistivity exhibit field induced sign changes of the AHE at low temperatures, suggesting an $ω_c τ$ related crossover.

cond-mat.str-el↗

arXiv2011

Scaling of the anomalous Hall effect in SrRuO$_{3}$

We measure the anomalous Hall effect (AHE) resistivity $ρ_{xy}$ in thin films of the itinerant ferromagnet SrRuO$_{3}$. At low temperatures, the AHE coefficient $R_{s}$ varies with $ρ_{xx}^2$, and at higher temperatures, $R_{s}$ reaches a peak and then changes sign just below $T_{c}$. We find that for all films studied $R_{s}$ scales with resistivity in the entire ferromagnetic phase. We attribute the observed behavior to the contribution of the extrinsic side jumps mechanism and the intrinsic Karplus-Luttinger (Berry phase) mechanism including the effect of finite scattering rates.

cond-mat.str-el↗