Monolithic low-transition-temperature superconducting magnetometers for high resolution imaging magnetic fields of room temperature samples

Baudenbacher, F.; Fong, L. E.; Holzer, J. R.; Radparvar, M.
May 2003
Applied Physics Letters;5/19/2003, Vol. 82 Issue 20, p3487
Academic Journal
We have developed a monolithic low-temperature superconducting quantum interference device (SQUID) magnetometer and incorporated the device in a scanning microscope for imaging magnetic fields of room temperature samples. The instrument has a ∼100 µm spatial resolution and a 1.4 pT/Hz[sup ½] field sensitivity above a few hertz. We discuss design constraints on and potential applications of the SQUID microscope.


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