Evolution of Electronic Structure in Pristine and Rb-Reconstructed Surfaces of Kagome Metal RbV3Sb5

Yu，Jiawei1,2; Xu，Zian3; Xiao，Kebin1,2; Yuan，Yonghao1,2; Yin，Qiangwei4; Hu，Zhiqiang1,2; Gong，Chunsheng4; Guo，Yunkai1,2; Tu，Zhijun4; Tang，Peizhe3,5; Lei，Hechang4; Xue，Qi Kun1,2,6,7; Li，Wei1,2

2022-02-09

10.1021/acs.nanolett.1c03535

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

We report on in situ low-temperature (4 K) scanning tunneling microscope measurements of atomic and electronic structures of the cleaved surfaces of an alkali-based kagome metal RbV3Sb5 single crystals. We find that the dominant pristine surface exhibits Rb-1×1 structure, in which a unique unidirectional √3a0 charge order is discovered. As the sample temperature slightly rises, Rb-√3×1 and Rb-√3×√3 reconstructions form due to desorption of surface Rb atoms. Our conductance mapping results demonstrate that Rb desorption not only gives rise to hole doping but also reconstructs the electronic band structures. Surprisingly, we find a ubiquitous gap opening near the Fermi level in tunneling spectra on all the surfaces despite their large differences of hole-carrier concentration, indicating an orbital-selective band reconstruction in RbV3Sb5. The Rb desorption induced electronic reconstructions are further confirmed by our density functional theory calculations.

hole doping kagome metal orbital-selective band reconstruction scanning tunneling microscopy

SCI ; EI

英语

NI论文

其他

National Science Foundation[51788104,11674191] ; Ministry of Science and Technology of China["2018YFE0202600","2016YFA0300504","2016YFA0301002"] ; National Natural Science Foundation of China[11822412,11774423] ; Beijing Natural Science Foundation[Z200005]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000777171600007

AMER CHEMICAL SOC

20220611606191

Antimony compounds ; Crystal atomic structure ; Density functional theory ; Desorption ; Electronic structure ; Rubidium compounds ; Single crystals ; Temperature

Thermodynamics:641.1 ; Chemical Operations:802.3 ; Probability Theory:922.1 ; Atomic and Molecular Physics:931.3 ; Quantum Theory; Quantum Mechanics:931.4 ; Crystalline Solids:933.1 ; Crystal Lattice:933.1.1

MATERIALS SCIENCE

2-s2.0-85124135969

Scopus

1.State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing,100084,China
2.Frontier Science Center for Quantum Information,Beijing,100084,China
3.School of Materials Science and Engineering,Beihang University,Beijing,100191,China
4.Department of Physics,Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices,Renmin University of China,Beijing,100872,China
5.Max Planck Institute for the Structure and Dynamics of Matter,Center for Free-Electron Laser Science,Hamburg,22761,Germany
6.Beijing Academy of Quantum Information Sciences,Beijing,100193,China
7.Southern University of Science and Technology,Shenzhen,518055,China

Yu，Jiawei,Xu，Zian,Xiao，Kebin,et al. Evolution of Electronic Structure in Pristine and Rb-Reconstructed Surfaces of Kagome Metal RbV3Sb5[J]. NANO LETTERS,2022,22(3):918-925.

Yu，Jiawei.,Xu，Zian.,Xiao，Kebin.,Yuan，Yonghao.,Yin，Qiangwei.,...&Li，Wei.(2022).Evolution of Electronic Structure in Pristine and Rb-Reconstructed Surfaces of Kagome Metal RbV3Sb5.NANO LETTERS,22(3),918-925.

Yu，Jiawei,et al."Evolution of Electronic Structure in Pristine and Rb-Reconstructed Surfaces of Kagome Metal RbV3Sb5".NANO LETTERS 22.3(2022):918-925.