期刊
PHILOSOPHICAL MAGAZINE
卷 89, 期 22-24, 页码 1881-1891出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786430902785336
关键词
USb2; surface; DFT; STM; UHV; f electrons
类别
资金
- US DOE
- NNSA [AC02-76SF00515]
We have achieved what we believe to be the first atomic resolution scanning tunneling microscopy (STM) images for a uranium compound USb2 taken at room temperature. The a, b, and c lattice parameters in the images confirm that the tetragonal USb2 crystals cleave on the (001) basal plane as expected. Our calculations indicate a symmetric cut between Sb planes to be the most favorable cleavage plane and U atoms to be responsible for most of the density of states measured by STM. Since the spacing between Sb atoms and between U atoms is the same, STM topography alone cannot unambiguously identify the surface atom species.
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