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Hydrogen-induced anomalous Hall effect in Co-doped ZnO

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Title
Hydrogen-induced anomalous Hall effect in Co-doped ZnO
Author(s)
Yong Chan Cho; Seunghun Lee; Ji Hun Park; Won Kyoung Kim; Ho-Hyun Nahm; Chul Hong Park; Se-Young Jeong
Subject
anomalous Hall effect, hydrogen mediated ferromagnetism, Codoped
Publication Date
2014-07
Journal
NEW JOURNAL OF PHYSICS, v.16, pp.73030
Publisher
IOP PUBLISHING LTD
Abstract
The electrical transport characteristics and anomalous Hall effect (AHE) were investigated for a hydrogen-injected Co-doped ZnO thin film. Based on the measurements of resistivity and the Hall effect between 5K and 300 K, the existence of Co-H-Co complexes was observed to introduce the AHE and enable the AHE to persist up to room temperature. The observed H-induced AHE originates from the asymmetric scattering of carrier hopping between the localized states driven by ferromagnetic Co-H-Co complexes, and a theoretical study using first-principle calculations supports the experimental results well. This large ferromagnetic response of charge carriers by the hydrogen-induced AHE on semiconducting oxides will stimulate the further investigation of roomtemperature spintronic applications.
URI
https://pr.ibs.re.kr/handle/8788114/983
DOI
10.1088/1367-2630/16/7/073030
ISSN
1367-2630
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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