Geometric Optimization of Spin Current

POSTER

Abstract

Spintronics is the study of spin transport electronics. Already employed in data storage technologies, spintronics offers the opportunity to continue to shrink electronic devices past what traditional electronics are capable of. The application of spintronics requires highly optimized devices; more so than what is available currently. In this experiment we aim to optimize spin transport properties through the geometry of the device. More specifically, we investigate how the thickness of the sample affects the diffusion length of the spin current (SC). The sample device is a multilayer made up of FeMn(0.5)Pt($x)$Py(5), where $x$ is the thickness in nm, sputtered onto an oxidized silicon chip. SC is then induced by the Spin Hall Effect (SHE) which occurs when a current is passed through the Pt layer. The effect of SC on Py is measured by Brillouin light scattering (BLS) spectroscopy. Our data shows that spin diffusion length is dependent on the thickness of the sample and we are currently working to formulate a working model for it.

Authors

  • Josh Melander

    Linfield College

  • C. Andreoiu

    University of Washington, Centre for Organic Photonics and Electronics, School of Chemistry and Molecular Biosciences, University of Queensland, Centre for Organic Photonics and Electronics, School of Mathematics and Physics, University of Queensland, Department of Physics, Simon Fraser University, Dalhousie University, Faculty of Mathematics, University of Waterloo, Department of Physics, McMaster University, SLAC National Accelerator Laboratory, Stanford University, Stanford University, IFW-Dresden, Northern Illinois University, University of British Columbia, University of Michigan, Simon Fraser University, Institute for Quantum Computing, University of Waterloo, Washington State University, The University of British Columbia, The Weizmann Institute of Science, Oregon State University, University of Massachusetts Lowell, Aixtron Ltd., Cornell University, TRIUMF, Society of Physics Students, Western Washington University, Department of Physics and Astronomy, Washington State University, University of Portland, Pacific University, University of Idaho, Department of Physics, University of Washington, Emory University, SFU, Arizona State University, Research Centre J\"ulich, University of Victoria, EPM, \'Ecole Polytechnique de Montr\'eal (EPM), Technical U of Denmark, Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, Department of Physics, Portland State University, Portland, OR 97201, Department of Physics, Oregon State University, Corvallis, OR 97331, Department of Physics, Cornell University, Ithaca, NY 14853, Linfield College, Portland State University, University of British Columbia Physics and Astronomy, University of British Columbia Chemistry, Max Planck Institute for Polymer Research, Simon Fraser, Los Alamos National Lab, Los Alamos, McGill University, Los Alamos National Laboratory, University of Cambridge, CSNSM-IN2P3-CNRS, University of Manitobia, Univ. of British Columbia and TRIUMF, Ruprecht-Karls-Universitat and MPI and TRIUMF, Westfaelische Wilhelms-Universitaet, Univ. of Manitoba and TRIUMF, Tenische Universitaet Muenchen and TRIUMF, Simon Fraser Univ. and TRIUMF, University of British Columbia, TRIUMF, Ruprecht-Karls-Universit\"at Heidelberg, Max Planck Institute, TRIUMF, Westf\"alische Wilhelms-Universit\"at, TRIUMF, Johannes Gutenberg-Universit\"at Mainz, Ruprecht-Karls-Universit\"at Heidelberg, Univerity of Manitoba, TRIUMF, Simon Fraser University, TRIUMF, TRIUMF \& University of Manitoba, College of William and Mary, Universidad Autonoma de San Luis Potosi, University of Maryland, University of Manitoba, UBC, Texas A\&M, University of Kentucky, Georgia Institute of Technology, University of Guelph, St. Mary's University