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Home » Steve gives a talk at APS March Meeting

Steve gives a talk at APS March Meeting

March 9, 2018 By John Heron

This past week, Steve gave a contributed talk on theoretical calculations of strain dependent spin orbit splitting in PtMn3 and its effect on intrinsic transport properties.

Abstract: Efficient charge-to-spin current conversion in materials is crucial to the development of spintronic memory or logic devices. A promising and established method of spin current generation is the injection of charge current through a crystal with a strong intrinsic spin Hall conductivity. Recently, a class of antiferromagnets with the composition XMn3, where X={Pt, Ir, Rh}, have been identified as materials with large intrinsic spin Hall conductivities stemming from their non-trivial spin order. The exact role of antiferromagnetic spin texture on the generated spin current, however, is not fully understood. Temperature-dependent triangular AFM – collinear AFM phase transitions in chemically ordered PtMn3 can be exploited to probe this directly. Here, we report on the growth and magneto-transport measurement of ordered PtMn3 thin films. Harmonic transport measurement techniques utilizing spin-transfer torques were performed to determine the spin and anomalous Hall conductivities at select temperatures.

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Our work is multidisciplinary. We employ concepts and tools from the fields of materials science, chemistry, physics and electrical engineering to develop new methods to investigate and engineer … Read More

News

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