Exploring a Magnetic Phase Transition in Amorphous FeGe Using X-ray Scattering.
ORAL
Abstract
The rich phase diagram of crystalline B20 FeGe, which hosts skyrmions, spin helices, and conical helices, arises due to the competition between the Heisenberg exchange interaction, which favors collinear spins, and the Dzyaloshinskii-Moriya interaction (DMI), which favors an angle between adjacent spins. Broken inversion symmetry in the crystalline structure is typically considered to be the origin of DMI. Amorphous FeGe has no well-defined crystalline lattice but still exhibits DMI and hosts magnetic spin textures. In this talk, I present results from resonant X-ray scattering studies on a magnetic phase transition in amorphous FeGe between an ordered stripe phase and a disordered paramagnetic phase.
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Presenters
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Ryan Tumbleson
University of California, Santa Cruz
Authors
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Ryan Tumbleson
University of California, Santa Cruz
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Emily M Hollingworth
University of California, Berkeley
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ARNAB SINGH
Lawrence Berkeley National Laboratory
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Ahmad Us Saleheen
Lawrence Berkeley National Laboratory
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Margaret R McCarter
Lawrence Berkeley National Laboratory, University of California, Berkeley
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David Raftrey
University of California, Santa Cruz
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Sophie A Morley
Lawrence Berkeley National Lab
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Stephen D Kevan
Lawrence Berkeley National Laboratory
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Peter Fischer
Lawrence Berkeley National Laboratory
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Frances Hellman
University of California, Berkeley
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Sujoy Roy
Lawrence Berkeley National Laboratory, LBL