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  • Re: Information on STS ramp

    Dear Dinushi, Let me first explain the parameters so to establish a base as what settings we should be using for STS i(V). Feedback Type F EEDBACK TYPE , selected from a pull-down list, is used to control the tip-to-sample separation and helps avoid tip crashes that can be caused by drift. For each feedback type, feedback is on for the duration specified
    Posted to SPM Digest (Forum) by Chunzeng Li on Fri, Sep 9 2011
  • Re: STS curve using lock-in amplifier

    Dear Ki-Rak, Can you send me the manual for the Lock-in Amplifier you are using, I'd like to know what exactly are ADC1, ADC2, A, OSC Out. Here is my guess: ADC1 is to read in the modulated data, in this case, tunneling current. OSC Out is the AC drive signal, in this case, the dV. "A" got be the measured oscillation amplitude, here, dI
    Posted to SPM Digest (Forum) by Chunzeng Li on Fri, Jan 28 2011
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