Modular Approach to Spintronics [spintronics]

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A typical setup in spintronics experiments for characterization is the non-local spin valve configuration. A recent experiment [Niimi et al.] utilized such a setup to characterize the spin hall angle using the Inverse Spin Hall Effect using an NLSV. By injecting pure spin current into a material showing Giant Spin Hall Effect (GSHE), the Hall angle can be obtained by measuring the generated DC voltage across the GSHE material due to the Inverse Spin Hall Effect.

Spin Circuit Model of Non-Local ISHE Experimental Setup

The spin circuit model of the structure can be assembled using Non-Magnet, Ferromagnet, FM||NM Interface, Giant Spin Hall Effect, and LLG modules as shown below:

	NLISHE Experiment
Physical Structure
Spin-Circuit Model

Illustrative Simulation Results

By sweeping the magnetic field applied to the injector (left) magnet we can move it to its "hard axis" and note the ISHE voltage generated at the steady state*. From this data we can generate a plot of V_ISHE against applied H field as shown below

This matches the experimentally obtained result reported by Niimi et al.

Download

The model can be downloaded here.

Reference

• Y. Niimi, Y. Kawanishi, D. H. Wei, C. Deranlot, H. X. Yang, M. Chshiev, T. Valet, A. Fert, and Y. Otani, “Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys,” Phys. Rev. Lett., vol. 109, no. 15, p. 156602, Oct. 2012