期刊
APPLIED PHYSICS EXPRESS
卷 5, 期 4, 页码 -出版社
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/APEX.5.045802
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) [21241027, 21225001]
- World Premier International Research Center Initiative (WPI), MEXT
- National Science Council, Taiwan [100-2917-I-564-022]
- Grants-in-Aid for Scientific Research [21225001, 21241027] Funding Source: KAKEN
The structure of silicene, the two-dimensional honeycomb sheet of Si, grown on Ag(111) was investigated by scanning tunneling microscopy (STM) and low-energy electron diffraction (LEED) combined with density functional theory (DFT) calculation. Two atomic arrangements of honeycomb configuration were found by STM, which are confirmed by LEED and DFT calculations; one is 4 x 4 and the other is root 13 x root 13 R13.9 degrees In the 4 x 4 structure, the honeycomb lattice remains with six atoms displaced vertically, whereas the root 13 x root 13 R13.9 degrees takes the regularly buckled honeycomb geometry. (C) 2012 The Japan Society of Applied Physics
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