Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MM: Fachverband Metall- und Materialphysik
MM 47: Poster Session II
MM 47.4: Poster
Mittwoch, 14. März 2018, 18:30–19:45, Poster C
Anomalous Nernst effect in Ir22Mn78/Co20Fe60B20/MgO layers with perpendicular magnetic anisotropy — Sa Tu1,2, •Junfeng Hu1, Guoqiang Yu3,4, Haiming Yu1, Chuanpu Liu1, Florian Heimbach1, Xiangrong Wang5, Jianyu Zhang1, Youguang Zhang1, Amir Hamzic6, Kang L. Wang3, Weisheng Zhao1, and Jean-Philippe Ansermet2 — 1Fert Beijing Institute, School of Electronic and Information Engineering, BDBC, Beihang University, Xueyuan Road 37, Beijing 100191, China — 2Institute of Physics, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne CH-1015, Switzerland — 3Department of Electrical Engineering, University of California, Los Angeles, California 90095, USA — 4Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China — 5Physics Department, Hong Kong University Science & Technology, Kowloon, Hong Kong, People's Republic of China — 6Department of Physics, Faculty of Science, University of Zagreb, Zagreb HR-10001, Croatia
The anomalous Nernst effect in a perpendicularly magnetized Ir22Mn78/Co20Fe60B20/MgO thin film is measured using well-defined in-plane temperature gradients. The anomalous Nernst coefficient reaches 1.8 uV/K at room temperature, which is almost 50 times larger than that of a Ta/Co20Fe60B20/MgO thin film with perpendicular magnetic anisotropy. The anomalous Nernst and anomalous Hall results in different sample structures revealing that the large Nernst coefficient of the Ir22Mn78/Co20Fe60B20/MgO thin film is related to the interface between CoFeB and IrMn.