Giant magnetic anisotropy of heavy p-elements on high-symmetry substrates: a new paradigm for supported nanostructures | |
Pang, Rui1,2; Deng, Bei3; Shi, Xingqiang3; Zheng, Xiaohong4 | |
刊名 | NEW JOURNAL OF PHYSICS
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2018-04-27 | |
卷号 | 20期号:无页码:9 |
关键词 | giant magnetic anisotropy atomic dimer spin-orbital coupling defected graphene |
ISSN号 | 1367-2630 |
DOI | 10.1088/1367-2630/aabb88 |
英文摘要 | Nanostructures with giant magnetic anisotropy energies (MAEs) are desired in designing miniaturized magnetic storage and quantum computing devices. Previous works focused mainly on materials or elements with d electrons. Here, by taking Bi-X(X = In, Tl, Ge, Sn, Pb) adsorbed on nitrogenized divacancy of graphene and Bi atoms adsorbed on MgO(100) as examples, through ab initio and model calculations, we propose that special p-element dimers and single-adatoms on symmetry-matched substrates possess giant atomic MAEs of 72-200 meV, and has room temperature structural stability. The huge MAEs originate from the p-orbital degeneracy around the Fermi level in a symmetry-matched surface ligand field and the lifting of this degeneracy when spin-orbit interaction (SOI) is taken into account. Especially, we developed a simplified quantum mechanical model for the design principles of giant MAEs of supported magnetic adatoms and dimers. Thus, our discoveries and mechanisms provide a new paradigm to design giant atomic MAE of p electrons in supported nanostructures. |
资助项目 | National Natural Science Foundation of China[11474145] ; National Natural Science Foundation of China[11334003] ; National Natural Science Foundation of China[11574318] ; Young Teachers Special Startup Funds of Zhengzhou University ; Special fund of Theoretical Physics[11647083] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund[U1501501] ; Shenzhen Fundamental Research Foundation[JCYJ20170808153632616] |
WOS关键词 | TRANSITION-METAL DIMERS ; MAGNETOCRYSTALLINE ANISOTROPY ; MOLECULAR MAGNETS ; SINGLE ATOMS ; SURFACES ; SPECTROSCOPY ; EXCITATIONS ; GRAPHENE ; ADATOMS ; LIMIT |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000431046200003 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/35418] ![]() |
专题 | 合肥物质科学研究院_中科院固体物理研究所 |
通讯作者 | Zheng, Xiaohong |
作者单位 | 1.Zhengzhou Univ, Int Lab Quantum Funct Mat Henan, Zhengzhou 450001, Henan, Peoples R China 2.Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Henan, Peoples R China 3.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Pang, Rui,Deng, Bei,Shi, Xingqiang,et al. Giant magnetic anisotropy of heavy p-elements on high-symmetry substrates: a new paradigm for supported nanostructures[J]. NEW JOURNAL OF PHYSICS,2018,20(无):9. |
APA | Pang, Rui,Deng, Bei,Shi, Xingqiang,&Zheng, Xiaohong.(2018).Giant magnetic anisotropy of heavy p-elements on high-symmetry substrates: a new paradigm for supported nanostructures.NEW JOURNAL OF PHYSICS,20(无),9. |
MLA | Pang, Rui,et al."Giant magnetic anisotropy of heavy p-elements on high-symmetry substrates: a new paradigm for supported nanostructures".NEW JOURNAL OF PHYSICS 20.无(2018):9. |
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