Determining the vibrations between sensor and sample in SQUID microscopy

Vibrations can cause noise inscanning probe microscopies. Relative vibrations between the scanningsensor and the sample are important but can be more difficult to determine than absolute vibrations or vibrations relative to the laboratory. We measure the noise spectral density in a scanningSQUIDmicroscope as a function of position near a localized source of magnetic field and show that we can determine the spectra of all three components of the relative sensor-sample vibrations. This method is a powerful tool for diagnosing vibrational noise inscanning microscopies.

Source: Applied Physics Letters - December 5, 2016 Category: Physics Authors: Daniel Schiessl, John R. Kirtley, Lisa Paulius, Aaron J. Rosenberg, Johanna C. Palmstrom, Rahim R. Ullah, Connor M. Holland, Y.-K.-K. Fung, Mark B. Ketchen, Gerald W. Gibson Jr. and Kathryn A. Moler Source Type: research