Spin-Resolved Imaging of Antiferromagnetic Order in Fe4 Se5 Ultrathin Films on SrTiO3

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 19 vom: 01. Mai, Seite e2209931
1. Verfasser: Zhang, Wenhao (VerfasserIn)
Weitere Verfasser: Zhang, Zhi-Mo, Nie, Jin-Hua, Gong, Ben-Chao, Cai, Min, Liu, Kai, Lu, Zhong-Yi, Fu, Ying-Shuang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Fe4Se5 films antiferromagnetic domains antiferromagnetic ground states magnetic stripes pair-checkerboard orders spin-polarized scanning tunneling microscopy
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520 |a Unraveling the magnetic order in iron chalcogenides and pnictides at atomic scale is pivotal for understanding their unconventional superconducting pairing mechanism, but is experimentally challenging. Here, by utilizing spin-polarized scanning tunneling microscopy, real-space spin contrasts are successfully resolved to exhibit atomically unidirectional stripes in Fe4 Se5 ultrathin films, the plausible closely related compound of bulk FeSe with ordered Fe-vacancies, which are grown by molecular beam epitaxy. As is substantiated by the first-principles electronic structure calculations, the spin contrast originates from a pair-checkerboard antiferromagnetic ground state with in-plane magnetization, which is modulated by a spin-lattice coupling. These measurements further identify three types of nanoscale antiferromagnetic domains with distinguishable spin contrasts, which are subject to thermal fluctuations into short-ranged patches at elevated temperatures. This work provides promising opportunities in understanding the emergent magnetic order and the electronic phase diagram for FeSe-derived superconductors 
650 4 |a Journal Article 
650 4 |a Fe4Se5 films 
650 4 |a antiferromagnetic domains 
650 4 |a antiferromagnetic ground states 
650 4 |a magnetic stripes 
650 4 |a pair-checkerboard orders 
650 4 |a spin-polarized scanning tunneling microscopy 
700 1 |a Zhang, Zhi-Mo  |e verfasserin  |4 aut 
700 1 |a Nie, Jin-Hua  |e verfasserin  |4 aut 
700 1 |a Gong, Ben-Chao  |e verfasserin  |4 aut 
700 1 |a Cai, Min  |e verfasserin  |4 aut 
700 1 |a Liu, Kai  |e verfasserin  |4 aut 
700 1 |a Lu, Zhong-Yi  |e verfasserin  |4 aut 
700 1 |a Fu, Ying-Shuang  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 35(2023), 19 vom: 01. Mai, Seite e2209931  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:35  |g year:2023  |g number:19  |g day:01  |g month:05  |g pages:e2209931 
856 4 0 |u http://dx.doi.org/10.1002/adma.202209931  |3 Volltext 
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