气候变化领域集成服务门户(CCPortal): Electronically driven spin-reorientation transition of the correlated polar metal Ca3Ru2O7

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DOI	10.1073/pnas.2003671117
	Electronically driven spin-reorientation transition of the correlated polar metal Ca3Ru2O7
	Marković I.; Watson M.D.; Clark O.J.; Mazzola F.; Morales E.A.; Hooley C.A.; Rosner H.; Polley C.M.; Balasubramanian T.; Mukherjee S.; Kikugawa N.; Sokolov D.A.; Mackenzie A.P.; King P.D.C.
发表日期	2020
ISSN	0027-8424
起始页码	15524
结束页码	15529
卷号	117 期号:27
英文摘要	The interplay between spin-orbit coupling and structural inversion symmetry breaking in solids has generated much interest due to the nontrivial spin and magnetic textures which can result. Such studies are typically focused on systems where large atomic number elements lead to strong spin-orbit coupling, in turn rendering electronic correlations weak. In contrast, here we investigate the temperature-dependent electronic structure of Ca3Ru2O7, a 4d oxide metal for which both correlations and spin-orbit coupling are pronounced and in which octahedral tilts and rotations combine to mediate both global and local inversion symmetry-breaking polar distortions. Our angle-resolved photoemission measurements reveal the destruction of a large hole-like Fermi surface upon cooling through a coupled structural and spinreorientation transition at 48 K, accompanied by a sudden onset of quasiparticle coherence. We demonstrate how these result from band hybridization mediated by a hidden Rashba-type spin- orbit coupling. This is enabled by the bulk structural distortions and unlocked when the spin reorients perpendicular to the local symmetry-breaking potential at the Ru sites. We argue that the electronic energy gain associated with the band hybridization is actually the key driver for the phase transition, reflecting a delicate interplay between spin-orbit coupling and strong electronic correlations and revealing a route to control magnetic ordering in solids. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Angle-resolved photoemission; Correlated oxide; Magnetism; Rashba spin-orbit; Ruthenate
语种	英语
scopus关键词	ruthenium; angle resolved photoemission spectroscopy; Article; chemical phenomena; controlled study; crystal structure; hybridization; phase transition; priority journal; spin reorientation transition; temperature dependence
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160264
作者单位	Marković, I., Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom, Max Planck Institute for Chemical Physics of Solids, Dresden, 01187, Germany; Watson, M.D., Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom; Clark, O.J., Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom; Mazzola, F., Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom; Morales, E.A., Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, United Kingdom, Max Planck Institute for Chemical Physics of Solids, Dresden, 01187, Germany; Hooley, C.A., Scottish Universities Physics Alliance, School of Physics and Astronomy, University of St Andrew...
推荐引用方式 GB/T 7714	Marković I.,Watson M.D.,Clark O.J.,et al. Electronically driven spin-reorientation transition of the correlated polar metal Ca3Ru2O7[J],2020,117(27).
APA	Marković I..,Watson M.D..,Clark O.J..,Mazzola F..,Morales E.A..,...&King P.D.C..(2020).Electronically driven spin-reorientation transition of the correlated polar metal Ca3Ru2O7.Proceedings of the National Academy of Sciences of the United States of America,117(27).
MLA	Marković I.,et al."Electronically driven spin-reorientation transition of the correlated polar metal Ca3Ru2O7".Proceedings of the National Academy of Sciences of the United States of America 117.27(2020).