Journal
INSTRUMENTS AND EXPERIMENTAL TECHNIQUES
Volume 53, Issue 3, Pages 461-467Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S0020441210030267
Keywords
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Funding
- Russian Foundation for Basic Research [07-02-01131-a, 06-02-72552-NTsNIL-a]
- Presidium of the Russian Academy of Sciences
- Branch of Physical Sciences of the Russian Academy of Sciences
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An ultrahigh vacuum device for measuring the conductivity of surface structures based on a closed-cycle refrigerator is described. The device allows measurements of the conductivity of surface atomic structures as a function of the temperature (in the range 22-300 K) and electric field. The circuit for conductivity measurements allows operation with contact resistances of up to 10(10) Omega and currents as low as 10(-13)A. The operation of the device is demonstrated by an example of measuring the conductivity of a clean reconstructed Si(111)7 - 7 surface.
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