Pseudogap and Weak Multifractality in 2D Disordered Mott Charge-Density-Wave Insulator
文献类型：期刊论文
| 作者 | Gao, Jianhua2; Park, Jae Whan2; Kim, Kiseok3; Song, Sun Kyu2,3; Park, Hae Ryong2,3; Lee, Jhinhwan2; Park, Jewook2; Chen, Fangchu1,4; Luo, Xuan1 ; Sun, Yuping1,5,6
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| 刊名 | NANO LETTERS
 |
| 出版日期 | 2020-09-09 |
| 卷号 | 20 |
| ISSN号 | 1530-6984 |
| 关键词 | charge density wave Mott insulator transition metal dichalcogenide pseudogap multifractality disorder |
| DOI | 10.1021/acs.nanolett.0c01607 |
| 通讯作者 | Yeom, Han Woong(yeom@postech.ac.kr) |
| 英文摘要 | We investigate electronic states of Se-substituted 1T-TaS2 by scanning tunneling microscopy/spectroscopy (STM/STS), where superconductivity emerges from the unique Mott-charge-density-wave (Mott-CDW) state. Spatially resolved STS measurements reveal that a pseudogap replaces the Mott gap with the CDW gaps intact. The pseudogap has little correlation with the unit-cell-to-unit-cell variation in the local Se concentration but appears globally. The correlation length of the local density of states (LDOS) is substantially enhanced at the Fermi energy and decays rapidly at high energies. Furthermore, the statistical analysis of LDOS indicates the weak multifractal behavior of the wave functions. These findings suggest a correlated metallic state induced by disorder and provide a new insight into the emerging superconductivity in two-dimensional materials. |
| WOS关键词 | SUPERCONDUCTIVITY ; PHASE ; TRANSITION ; 1T-TAS2 ; STATE |
| 资助项目 | Institute for Basic Science[IBS -R014-D1] ; National Key Research and Development Program[2016YFA0300404] ; National Nature Science Foundation of China[11674326/11874357] ; National Natural Science Foundation of China[U1832141] ; Chinese Academy of Sciences Large -Scale Scientific Facility[U1832141] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000571442000009 |
| 资助机构 | Institute for Basic Science ; National Key Research and Development Program ; National Nature Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences Large -Scale Scientific Facility |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/104241]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yeom, Han Woong |
| 作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Inst Basic Sci IBS, Ctr Artificial Low Dimens Elect Syst, Pohang 37673, South Korea 3.Pohang Univ Sci & Technol, Dept Phys, Pohang 37673, South Korea 4.Univ Sci & Technol China, Hefei 230026, Peoples R China 5.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China 6.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Jianhua,Park, Jae Whan,Kim, Kiseok,et al. Pseudogap and Weak Multifractality in 2D Disordered Mott Charge-Density-Wave Insulator[J]. NANO LETTERS,2020,20. |
| APA | Gao, Jianhua.,Park, Jae Whan.,Kim, Kiseok.,Song, Sun Kyu.,Park, Hae Ryong.,...&Yeom, Han Woong.(2020).Pseudogap and Weak Multifractality in 2D Disordered Mott Charge-Density-Wave Insulator.NANO LETTERS,20. |
| MLA | Gao, Jianhua,et al."Pseudogap and Weak Multifractality in 2D Disordered Mott Charge-Density-Wave Insulator".NANO LETTERS 20(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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