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Understanding the Flow of Angular Momentum for Improved Data Storage

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A team led by scientists at Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) sought to better understand the flow of angular momentum during ultrafast optical demagnetization in a ferromagnetic material. Working with scientists from Helmholtz Zentrum Berlin and Nihon University, the MBI scientists followed the flow of angular momentum in detail for an iron-gadolinium alloy. In this material, adjacent iron and gadolinium atoms have magnetization with opposite direction. Wolfgang Pauli and Niels Bohr watching a spinning top in 1954. Erik Gustafson photograph....Read full article

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