RT Journal Article
T1 Observation of a topologically protected state in a magnetic domain wall stabilized by a ferromagnetic chemical barrier
A1 Ruiz Gómez, Sandra
A1 Mascaraque Susunaga, Arantzazu
A1 Pérez García, Lucas
A1 Foerster, Michael
A1 Aballe, Lucía
A1 Proenca, M. P.
A1 Lucas, Irene
A1 Prieto, José Luis
A1 Figuera, Juan de la
A1 Quesada, Adrián
AB The precise control and stabilization of magnetic domain walls is key for the development of the next generation magnetic nano-devices. Among the multitude of magnetic configurations of a magnetic domain wall, topologically protected states are of particular interest due to their intrinsic stability. In this work, using XMCD-PEEM, we have observed a topologically protected magnetic domain wall in a ferromagnetic cylindrical nanowire. Its structure is stabilized by periodic sharp alterations of the chemical composition in the nanowire. The large stability of this topologically protected domain wall contrasts with the mobility of other non-protected and non-chiral states also present in the same nanowire. The micromagnetic simulations show the structure and the conditions required to find the topologically protected state. These results are relevant for the design of future spintronic devices such as domain wall based RF oscillators or magnetic memories.
PB Nature Publishing Group
SN 2045-2322
YR 2018
FD 2018-11-12
LK https://hdl.handle.net/20.500.14352/12985
UL https://hdl.handle.net/20.500.14352/12985
LA eng
NO © 2018 The Author(s) This work is supported by the Spanish Ministry of Economy and Competitiveness (MINECO) through Projects MAT2014-52477-C5-1-P, 2-P, MAT2015-64110-C2-1-P, 2-P and MAT2017-87072-C4-2-P and by Portuguese FCT and COMPETE 2020, under project POCI-01-0145-FEDER-028676. IMDEA Nanociencia acknowledges support from the Severo Ochoa Programme for Centres of Excellence in R&D (MINECO, Grant SEV-2016-0686). MPP acknowledges FCT for grant SFRH/BPD/84948/2012. SRG acknowledges MINECO for FPI fellowship.
NO Ministerio de Economía y Competitividad (MINECO)
NO Portuguese FCT
NO COMPETE 2020
NO Severo Ochoa Programme for Centres of Excellence in RD (MINECO)
DS Docta Complutense
RD 29 abr 2024