| 题名 | Post-growth Fe deposition on the superconductivity of monolayer FeSe films on SrTi O3-δ |
| 作者 | |
| 通讯作者 | Pan，Minghu; Wang，Lili |
| 发表日期 | 2022-06-01
|
| DOI | |
| 发表期刊 | |
| EISSN | 2475-9953
|
| 卷号 | 6期号:6 |
| 摘要 | The superconductivity in bulk FeSe depends sensitively on the stoichiometry, ditto for the monolayer FeSe films grown on SrTiO3-δ and other substrates. To tune the stoichiometry, we deposit Fe onto monolayer FeSe films after epitaxial growth. Using in situ low-temperature scanning tunneling microscopy/spectroscopy, we find that the postdeposited Fe atoms incorporate into monolayer films and combine with excess Se to form FeSe, with an upper coverage limit of ∼0.4 unit-cell. Consequently, the superconducting gap concentrates in 10 to 12 meV. The work demonstrates a simple method for stoichiometry tuning and improving the spatial uniformity of monolayer FeSe films. Compared with the gap of ∼15 to 20 meV for the annealed films, the smaller superconducting gap indicates weakened FeSe-TiO2 coupling due to interfacial Se atom substitution. |
| 相关链接 | [Scopus记录] |
| 收录类别 | |
| 语种 | 英语
|
| 学校署名 | 其他
|
| WOS记录号 | WOS:000817850500001
|
| EI入藏号 | 20222912368503
|
| EI主题词 | Binary alloys
; Iron
; Scanning tunneling microscopy
; Selenium
; Selenium compounds
; Stoichiometry
; Superconducting films
; Temperature
; Thin films
; Titanium dioxide
|
| EI分类号 | Iron:545.1
; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3
; Thermodynamics:641.1
; Superconducting Materials:708.3
; Physical Chemistry:801.4
; Inorganic Compounds:804.2
|
| Scopus记录号 | 2-s2.0-85134081061
|
| 来源库 | Scopus
|
| 引用统计 |
被引频次[WOS]：5
|
| 成果类型 | 期刊论文 |
| 条目标识符 | //www.snoollab.com/handle/2SGJ60CL/401642 |
| 专题 | 理学院_物理系 |
| 作者单位 | 1.State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing,100084,China 2.School of Physics & Information Technology,Shaanxi Normal University,Xian,710119,China 3.Beijing Academy of Quantum Information Sciences,Beijing,100193,China 4.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China |
| 推荐引用方式 GB/T 7714 |
Jiao，Xiaotong,Gong，Guanming,Zhang，Zhiyu,et al. Post-growth Fe deposition on the superconductivity of monolayer FeSe films on SrTi O3-δ[J]. Physical Review Materials,2022,6(6).
|
| APA |
Jiao，Xiaotong.,Gong，Guanming.,Zhang，Zhiyu.,Dong，Wenfeng.,Ding，Cui.,...&Xue，Qi Kun.(2022).Post-growth Fe deposition on the superconductivity of monolayer FeSe films on SrTi O3-δ.Physical Review Materials,6(6).
|
| MLA |
Jiao，Xiaotong,et al."Post-growth Fe deposition on the superconductivity of monolayer FeSe films on SrTi O3-δ".Physical Review Materials 6.6(2022).
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| 条目包含的文件 | 条目无相关文件。 | |||||
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