Abstract
Many modern spintronic devices make use of large electric current densities to operate. This is indeed the case for nano-devices relying on the movement, pinning, and depinning of magnetic domain walls. A large current density generates heat, a fact that often has detrimental consequences for the operation of the device or even for the interpretation of scientific results. From the experimental point of view, having an idea of how relevant the Joule heating may be in your nano-device can save time and trouble. From the theoretical point of view, having an accurate estimation of the temperature in every region of the nano-magnet appears to be a key ingredient for the correct interpretation of the experiment. In this chapter we summarize some of the important aspects related to the problem of Joule heating in magnetic nanostrips. We provide some tips that may be useful for the experimentalists and show some examples of how the different material properties contribute to the local temperature. From the theoretical point of view, we show how to evaluate the thermal contribution in micro-magnetic simulations and we provide some examples based on previous experimental results.
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