resistivity of Si wafer at low T

David Goldhaber-Gordon goldhaber-gordon at stanford.edu
Thu May 19 00:02:16 PDT 2005


Hi David,

That wafer should conduct nicely at 300 mK (i.e. it is degenerately
doped). However, you need to be careful to make good contacts to the
wafer. A thin layer of dirt, or a Schottky barrier, may not matter at
room T but might dominate at low T.

Best,

David

-----Original Message-----
From: David Wang [mailto:daweiw at uci.edu] 
Sent: Wednesday, May 18, 2005 5:26 PM
To: labmembers at snf.stanford.edu
Subject: resistivity of Si wafer at low T


Hi,

I have a degenerately doped Si wafer (P-type, Boron doped) which has a
resistivity of 0.005 Ohm-cm at room T. Does anyone know what its
resistivity will be when the temperature drops to 0.3 K. Will it behave
like an insulator or a conductor at this low T.

Thanks a lot,

David





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