Okay, let’s extract the data about the voltage drop and corrections for contact resistance from the provided text.
The text states:
“A home-built d. c. source in series with either a 10 MΩ or 100 MΩ resistor generated the bias current, while a custom low-noise d. c. amplifier and a Hewlett Packard 3441A digital multimeter measured the voltage.“
and importantly:
“…resulting voltage drop across a two-terminal setup, with corrections applied for contact resistances.“
therefore, the key takeaway is:
* the researchers measured the voltage drop across a two-terminal setup.
* They specifically applied corrections for contact resistances when making these voltage measurements.
What the text doesn’t tell us:
* The specific method used to correct for contact resistance.
* The magnitude of the contact resistance.
* How significant the correction was.
The text simply states that the correction was applied, indicating it was a considered part of their experimental procedure to obtain accurate voltage readings.
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