Direct measurement of internal magnetic fields in natural sands

beena uc-01

Journal of Magnetic Resonance (2014)

With: Jan Walbrecker, Kathryn Moler, Rosemary Knight @ Stanford

Tuning the magnetism in LAO/STO

We are trying to learn more about the microscopic nature of this magnetism by tuning it in different ways. For example we found that local strain manipulates the ferromagnetic patches in LAO/STO. The images below show repeated scans of a small group of ferromagnetic patches that change as a result of local strain we apply with the tip of the SQUID’s chip.
Scanning Probe Manipulation of Magnetism at the LaAlO3/SrTiO3 Heterointerface
Nano Letters (2012)

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With: Kathryn MolerHarold Hwang