Tuning metal-insulator transition in delta-doped La:SrTiO3 superlattice by varying doping dimensionality and concentration
文献类型：期刊论文
| 作者 | Li Yun2 ; Lu Wen-Jian1
|
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2021-11-20 |
| 卷号 | 70 |
| 关键词 | two dimensional doping strong correlation effect metal-insulator transition |
| ISSN号 | 1000-3290 |
| DOI | 10.7498/aps.70.20210830 |
| 通讯作者 | Li Yun(liyunphy@foxmail.com) |
| 英文摘要 | Electronic properties in delta-doped La:SrTiO3 superlattices varying with the doping dimensionality and concentration are systematically studied through using first-principles calculation. The superlattices consist of periodically repeated La-doped single SrTiO3 layers in SrTiO3 film, and the doping dimensionality can be tuned by varying the space of the neighboring doped layers. At 25% doping concentration, the spacing between SrTiO3 layers increases from 1 unit-cell layer to 5 unit-cell layers, i.e. the doping dimensionality changes three dimensions to two dimensions, the superlattice charater changes from metallic character into insulating character, and the charge sequence, spin sequence and orbital sequence are present in a localized state. This metal-insulator transition is ascribed to the stronger correlation effect in the two-dimensional electron system. With the two-dimensional doping concentration increasing to 50%, the correlation effect becomes weak and the system becomes metallic. |
| WOS关键词 | NICKEL-OXIDE ; INTERFACES |
| 资助项目 | Scientific Research Staring Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China[-1098] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000732827600029 |
| 出版者 | CHINESE PHYSICAL SOC |
| 资助机构 | Scientific Research Staring Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126948]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Li Yun |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, HFIPS, Hefei 230031, Peoples R China 2.Hanshan Normal Univ, Sch Phys & Elect Engn, Chaozhou 521041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yun,Lu Wen-Jian. Tuning metal-insulator transition in delta-doped La:SrTiO3 superlattice by varying doping dimensionality and concentration[J]. ACTA PHYSICA SINICA,2021,70. |
| APA | Li Yun,&Lu Wen-Jian.(2021).Tuning metal-insulator transition in delta-doped La:SrTiO3 superlattice by varying doping dimensionality and concentration.ACTA PHYSICA SINICA,70. |
| MLA | Li Yun,et al."Tuning metal-insulator transition in delta-doped La:SrTiO3 superlattice by varying doping dimensionality and concentration".ACTA PHYSICA SINICA 70(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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