A Method for Compensating the Joule-Heating Effects in Current-Induced Domain Wall Motion

Autor:	Sang-Cheol Yoo, Byoung-Chul Min, Kyung-Ho Shin, Sug-Bong Choe, Duck-Ho Kim, Kyoung-Woong Moon
Rok vydání:	2013
Předmět:	Physics Cryostat Arrhenius equation Temperature control Condensed matter physics Electronic Optical and Magnetic Materials symbols.namesake Domain wall (magnetism) Creep symbols Torque Electrical and Electronic Engineering Joule heating Scaling
Zdroj:	IEEE Transactions on Magnetics. 49:3207-3210
ISSN:	1941-0069 0018-9464
DOI:	10.1109/tmag.2013.2241403
Popis:	We propose here a method for compensating the Joule-heating effects in the current-induced domain wall motion (CIDWM). In CIDWM experiments, the current induces not only the spin-transfer torque (STT) effects but also the Joule-heating effects, and both effects influence the domain wall (DW) motion. It is thus desired to develop a way to compensate the Joule-heating effects, in order to determine the pure STT effects on the DW motion. Up to now, in studies of DW creeping motions, such Joule-heating effects have been eliminated based on the Arrhenius law by assuming the temperature-independent creep scaling constants. However, here we find that such scaling constants are sensitive to the temperature, from the DW creeping experiment in Pt/Co/Pt wires with temperature control in a cryostat. By accounting the temperature dependence of the scaling constants, we demonstrate that all the DW speeds with various temperatures are exactly collapsed onto a single universal curve, which enables us to examine the pure STT effects on the DW motion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e29c7b19a5bed3fd057b592b95211016 https://doi.org/10.1109/tmag.2013.2241403 Zobrazit plný text záznamu