Inducing skyrmions in ultrathin Fe films by hydrogen exposure.
Inducing skyrmions in ultrathin Fe films by hydrogen exposure.
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DOI:
10.1038/s41467-018-04015-z
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发表时间:
2018-04-20
影响因子:
16.6
通讯作者:
Wiesendanger R
中科院分区:
文献类型:
--
作者:
Hsu PJ;Rózsa L;Finco A;Schmidt L;Palotás K;Vedmedenko E;Udvardi L;Szunyogh L;Kubetzka A;von Bergmann K;Wiesendanger R
Magnetic skyrmions are localized nanometer-sized spin configurations with particle-like properties, which are envisioned to be used as bits in next-generation information technology. An essential step toward future skyrmion-based applications is to engineer key magnetic parameters for developing and stabilizing individual magnetic skyrmions. Here we demonstrate the tuning of the non-collinear magnetic state of an Fe double layer on an Ir(111) substrate by loading the sample with atomic hydrogen. By using spin-polarized scanning tunneling microscopy, we discover that the hydrogenated system supports the formation of skyrmions in external magnetic fields, while the pristine Fe double layer does not. Based on ab initio calculations, we attribute this effect to the tuning of the Heisenberg exchange and the Dzyaloshinsky–Moriya interactions due to hydrogenation. In addition to interface engineering, hydrogenation of thin magnetic films offers a unique pathway to design and optimize the skyrmionic states in low-dimensional magnetic materials. Stabilization of skyrmions is one of the key issues in skyrmion-based spintronics. Here the authors demonstrate that hydrogenation can induce the formation of skyrmions in iron thin films, which provides an alternative way to tailor skyrmion states in low-dimensional magnetic materials.
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影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
影响因子:
8.6
作者:
Dubout, Q.;Donati, F.;Brune, H.
通讯作者:
Brune, H.
影响因子:
8.6
作者:
FERT, A;LEVY, PM
通讯作者:
LEVY, PM
影响因子:
56.9
作者:
Jiang, Wanjun;Upadhyaya, Pramey;Hoffmann, Axel
通讯作者:
Hoffmann, Axel
影响因子:
8.6
作者:
MORIYA, T
通讯作者:
MORIYA, T