Two-Dimensional Rare Earth-Gold Intermetallic Compounds on Au(111) by Surface Alloying

Que，Yande1; Zhuang，Yuan1; Liu，Ziyuan2; Xu，Chaoqiang1; Liu，Bin1; Wang，Kedong3; Du，Shixuan2; Xiao，Xudong1

2020-05-21

10.1021/acs.jpclett.0c00981

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

1948-7185

Surface alloying is a straightforward route to control and modify the structure and electronic properties of surfaces. Here, we present a systematic study on the structural and electronic properties of three novel rare earth-based intermetallic compounds, namely, ReAu2 (Re = Tb, Ho, and Er), on Au(111) via directly depositing rare earth metals onto the hot Au(111) surface. Scanning tunneling microscopy/spectroscopy measurements reveal very similar atomic structures and electronic properties, e.g., electronic states and surface work functions, for all these intermetallic compound systems because of the physical and chemical similarities between these rare earth elements. Further, these electronic properties are periodically modulated by the moiré structures caused by the lattice mismatches between ReAu2 and Au(111). These periodically modulated surfaces could serve as templates for the self-assembly of nanostructures. In addition, these two-dimensional rare earth-based intermetallic compounds provide platforms to investigate rare earth-related catalysis, magnetisms, etc. in the lower dimensions.

SCI ; EI

英语

NI论文

其他

Research Grant Council of Hong Kong[404613] ; Direct Grant for Research of CUHK[4053306][4053348] ; National Natural Science Foundation of China[11574128] ; MOST 973 Program[2014CB921402]

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

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000537432500050

AMER CHEMICAL SOC

20202608867188

Gold alloys ; Scanning tunneling microscopy ; Binary alloys ; Lattice mismatch ; Alloying ; Electronic properties ; Structural properties ; Rare earths ; Gold compounds ; Gold deposits ; Plasmonics

Structural Design:408 ; Heavy Metal Mines:504.3 ; Metallurgy:531.1 ; Precious Metals:547.1 ; Inorganic Compounds:804.2 ; Plasma Physics:932.3 ; Crystal Lattice:933.1.1 ; Materials Science:951

2-s2.0-85085263627

Scopus

1.Department of Physics, the Chinese University of Hong Kong, Shatin, Hong Kong, China
2.Institute of Physics and University of Chinese Academy of Sciences,Chinese Academy of Sciences,100190,China
3.Department of Physics,Southern University of Science and Technology,Shenzhen,518055,China

Que，Yande,Zhuang，Yuan,Liu，Ziyuan,et al. Two-Dimensional Rare Earth-Gold Intermetallic Compounds on Au(111) by Surface Alloying[J]. Journal of Physical Chemistry Letters,2020,11(10):4107-4112.

Que，Yande.,Zhuang，Yuan.,Liu，Ziyuan.,Xu，Chaoqiang.,Liu，Bin.,...&Xiao，Xudong.(2020).Two-Dimensional Rare Earth-Gold Intermetallic Compounds on Au(111) by Surface Alloying.Journal of Physical Chemistry Letters,11(10),4107-4112.

Que，Yande,et al."Two-Dimensional Rare Earth-Gold Intermetallic Compounds on Au(111) by Surface Alloying".Journal of Physical Chemistry Letters 11.10(2020):4107-4112.