Optical manipulation of electronic dimensionality in a quantum material
Duan, Shaofeng1; Cheng, Yun2; Xia, Wei3; Yang, Yuanyuan1; Xu, Chengyang4; Qi, Fengfeng2; Huang, Chaozhi1; Tang, Tianwei1; Guo, Yanfeng3; Luo, Weidong4,5
2021-07-08
发表期刊NATURE
ISSN0028-0836
EISSN1476-4687
卷号595期号:7866页码:239
DOI10.1038/s41586-021-03643-8
摘要Exotic phenomena can be achieved in quantum materials by confining electronic states into two dimensions. For example, relativistic fermions are realized in a single layer of carbon atoms(1), the quantized Hall effect can result from two-dimensional (2D) systems(2,3), and the superconducting transition temperature can be considerably increased in a one-atomic-layer material(4,5). Ordinarily, a 2D electronic system can be obtained by exfoliating the layered materials, growing monolayer materials on substrates, or establishing interfaces between different materials. Here we use femtosecond infrared laser pulsesto invert the periodic lattice distortion sectionally in a three-dimensional (3D) charge density wave material (1T-TiSe2), creating macroscopic domain walls of transient 2D ordered electronic states with unusual properties. The corresponding ultrafast electronic and lattice dynamics are captured by time-resolved and angle-resolved photoemission spectroscopy(6) and ultrafast electron diffraction at energies of the order of megaelectronvolts(7). Moreover, in the photoinduced 2D domain wall near the surface we identify a phase with enhanced density of states and signatures of potential opening of an energy gap near the Fermi energy. Such optical modulation of atomic motion is an alternative path towards realizing 2D electronic states and will be a useful platform upon which novel phases in quantum materials may be discovered.
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收录类别SCIE
语种英语
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000671377900011
出版者NATURE RESEARCH
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/127721
专题物质科学与技术学院_公共科研平台_拓扑物理实验室
物质科学与技术学院_PI研究组_郭艳峰组
通讯作者Xiang, Dao; Zhang, Wentao
作者单位1.Shanghai Jiao Tong Univ, Key Lab Artificial Structures & Quantum Control, Minist Educ, Shenyang Natl Lab Mat Sci,Sch Phys & Astron, Shanghai, Peoples R China;
2.Shanghai Jiao Tong Univ, Key Lab Laser Plasmas, Minist Educ, Sch Phys & Astron, Shanghai, Peoples R China;
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai, Peoples R China;
4.Shanghai Jiao Tong Univ, Key Lab Artificial Struct & Quantum Control, Minist Educ, Sch Phys & Astron, Shanghai, Peoples R China;
5.Shanghai Jiao Tong Univ, Inst Nat Sci, Shanghai, Peoples R China;
6.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai, Peoples R China;
7.Shanghai Jiao Tong Univ, Zhangjiang Inst Adv Study, Shanghai, Peoples R China
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Duan, Shaofeng,Cheng, Yun,Xia, Wei,et al. Optical manipulation of electronic dimensionality in a quantum material[J]. NATURE,2021,595(7866):239.
APA Duan, Shaofeng.,Cheng, Yun.,Xia, Wei.,Yang, Yuanyuan.,Xu, Chengyang.,...&Zhang, Wentao.(2021).Optical manipulation of electronic dimensionality in a quantum material.NATURE,595(7866),239.
MLA Duan, Shaofeng,et al."Optical manipulation of electronic dimensionality in a quantum material".NATURE 595.7866(2021):239.
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