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3D Skyrmion-Lattice and Topological Hall Effect in MnGe

  • Naoya Kanazawa
Chapter
Part of the Springer Theses book series (Springer Theses)

Abstract

We have observed topological Hall effect over a wide temperature-magnetic field region in a B20-type MnGe. The magnitude of the topological Hall resistivity is nearly temperature-independent below 70 K, which reflects the real-space emergent magnetic field proportional to a geometric quantity, so-called scalar spin chirality, of the underlying non-coplanar spin texture. From high- and small-angle neutron diffraction studies, it is anticipated that a relatively short-period (3–6 nm) topological spin structure, possibly 3D skyrmion crystal composed of three orthogonal helical structures, is stabilized as the ground state to produce the largest topological Hall response among the B20-type bulk magnets.

Keywords

Triangular Lattice Berry Phase Zero Field Cool Anomalous Hall Effect Spin Chirality 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Japan 2015

Authors and Affiliations

  1. 1.Department of Applied PhysicsThe University of TokyoTokyoJapan

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