Full temperature calibration from 4 to 300 K of the voltage response of piezoelectric tube scanner PZT‐5A for use in scanning tunneling microscopes

We have calibrated the displacement/voltage (A/V) response of our piezoelectric scanning tube (PZT‐5A) by imaging graphite at over 40 temperatures between 4 and 300 K. We have also calibrated the (A/V) response as a function of voltage up to 220 V at room temperature, imaging a gold‐plated diffraction grating. We find that the temperature dependence of the (A/V) response is linear to within 10% and is reduced by a factor of 5.5 on decreasing temperature from 300 to 4.2 K. The near linearity with temperature of the (A/V) response makes the PZT‐5A lead zirconate titanate composition a convenient choice for low temperature scanning tunneling microscope piezo tube elements.

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