5
MEASUREMENT OPERATION
5-206
TMPM5200-2
•
Si
You
rement.
the parameters for the meas-
•
S
apping measurement. The specified SPS measurement is
frame (Topography) scan. Specify the kind of SPS
measurement to perform and the parameters for the measurement using the SPM
Parameters window. The number of pixels is 128
×
128 in the SPS Mapping scan
ngle SPS
can perform various kinds of SPS (Scanning Probe Spectroscopy) measu
Specify the kind of SPS measurement to perform and
urement using the SPM Parameters window.
PS Mapping
You can perform SPS M
performed at every pixel in one
mode.
If you specify I-V for SPS measurement, the CITS (Current Imaging Tunneling
Spectroscopy) scan will be performed. The images displayed during scanning are as
follows:
Topo
image
Current
image
Current
image
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”
”
”
”
”
”
”
”
”
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”
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STM/
pecify the scanning mode. Strictly speaking, specify the kind of signal to use for
irection feedback in this selection box.
Contact
This is the Contact mode in the AFM mode. The Force signal is used for feedback.
is the AC mode in the AFM mode. The RMS (Root-Mean-Square) of the
frequency-amplitude signal of the cantilever oscillation is used for feedback.
•
FM
This is the AC mode in the AFM mode. The frequency signal (FMD signal) of the
cantilever oscillation is used for feedback.
•
Phase
This is the AC mode in the AFM mode. The Phase signal of the cantilever oscilla-
tion is used for feedback.
AFM
S
Z-d
•
STM
This is the STM mode. The logarithmic value of the tunneling current is used for
the feedback signal.
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•
AC
This