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- W1569563347 abstract "The interplay between charge, spin, and heat currents in magnetic nanosystems subjected to a temperature gradient has led to a variety of novel effects and promising applications studied in the fast-growing field of spincaloritronics [1]. In this context, the magneto-Seebeck effects of magnetic tunnel junctions [2,3], superlattices [4,5] and nanowires [6,7] have been studied which established a new line of research. Here we explore the magnetothermoelectrical properties of one more fundamental system: the magnetic domain wall. The domain walls are generated in L-shaped permalloy nanowires with a notch. In thermal gradients of the order of few Kelvin per micrometer along the long wire axis, we find a clear magneto-Seebeck signature of a single domain wall. The results can be explained by the magnetization-dependent Seebeck coefficient of permalloy (Py) in combination with the spatially localized change of spin configuration due to the presence of a domain wall. We fabricate L-shaped Py nanowires (4 μm long, 280 nm wide, and 27 nm thick) contacted by Pt wires (Fig. 1A top). An additional Pt strip located at a distance of 1.5 μm from the Py nanowire serves as a resistive heater. The sample is placed in a magnetic field of up to 137 mT oriented in-plane at an angle φ to the wire direction. As confirmed by micromagnetic simulations, a DW can be generated at the Ls corner and moved by external fields to the notch where it is pinned (Fig. 1A bottom)." @default.
- W1569563347 created "2016-06-24" @default.
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- W1569563347 date "2015-05-01" @default.
- W1569563347 modified "2023-09-25" @default.
- W1569563347 title "Magnetothermoelectrical properties of an individual magnetic domain wall" @default.
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- W1569563347 doi "https://doi.org/10.1109/intmag.2015.7157456" @default.
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