ISSN:
1432-0630
Keywords:
PACS: 71.45.Lr; 61.16.Ch; 71.20.Tx
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
2 . At room temperature the clean surface showed large flat areas and a trigonal atomic arrangement. Tunneling spectroscopy revealed the known state at 100 mV below EF. At 60 K the clean surface showed a 4×4charge density wave and the spectra showed a CDW gap Δ≈80 mV. When evaporating ≤1 ML Na at room temperature, the intercalated Na were distributed non-uniformly, giving bright areas of increased topographic height where Na was intercalated. In the intercalated material the VSe2 state was seen in the tunneling spectra, and was slightly shifted towards EF. Preliminary spectroscopy of the intercalated material at 60 K showed two different types of spectra. One type showed the VSe2 peak clearly, but had no sign of the CDW gap, while the other type showed a gap structure but did not resolve the VSe2 state. Presently, we can not tell whether these different spectra originate from the differences in the intercalated and non-intercalated areas or not.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003390051129
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