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5
MEASUREMENT OPERATION
5-222
TMPM5200-2
ow
Bias tab wind
Specify detailed parameters concerning the bias voltage in the Bias tab window.
This slider enables you to specify the bias voltage to be applied in backward
sition selection box.
•
Bias Control
•
Backward Bias
scanning when Mirror is selected in the Acqui
Bias voltage specified
in “For ward” is applied.
Bias voltage specified in
”Backward Bias” is applied.
Backward Bias is in effect only when Mirror is selected in the Acquisition
selection box. If any other scanning method is specified, the bias voltage that is
specified in Forward is applied in both forward (left-to-right) and backward
(right-to-left) scanning, even though different voltages are specified in Forward
and Backward Bias.
•
Bias Offset
When you perform STM observation while directly heating the specimen using
the optional 4-terminal Specimen Holder, the power supply for heating is used
with an electrically floating condition. With the STM tip positioned just in the
center of the specimen, the actual bias voltage is:
Voltage specified in the Forward input box – heating-power voltage/2