Regensburg 2022 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 10: Non-Skyrmionic Magnetic Textures
MA 10.5: Vortrag
Montag, 5. September 2022, 16:15–16:30, H47
Chiral response of spin spiral states as the origin of chiral transport fingerprints of spin textures — •Jonathan Kipp1,2, Fabian Lux3, and Yuriy Mokrousov2,3 — 1Department of Physics, RWTH Aachen University, 52056 Aachen, Germany — 2Peter Gr\"unberg Institut and Institute for Advanced Simulation, Forschungszentrum J\"ulich and JARA, 52425 J\"ulich, Germany — 3Institute of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany
To extend the commonly accepted yet simplifying and approximate picture of transport effects taking place in systems with spatially varying magnetization such as skyrmions, domain walls and multi-q states, it is important to understand the transport properties of the homochiral spin-spiral states, which are building blocks for these more advanced textures of different nature and dimensionality. In this work, by referring to phenomenological symmetry arguments based on gradient expansion and explicit calculations within the Kubo framework, we study transport properties of various types of spin-spirals in a two-dimensional model with strong spin-orbit interaction. Specifically, we focus on the contributions to the magnetoconductivity, planar Hall effect and anomalous Hall effect, which are sensitive to the sense of chirality of the spiral states. In particular, we analyze the emergence, symmetry, and microscopic properties of the resulting chiral magnetoconductivity, chiral planar Hall effect and chiral Hall effect in terms of spin-spiral propagation direction, cone angle, spiral pitch and disorder strength.