Condensed Matter Seminar: Emerging magnetic and electronic properties in 3d-5d oxide heterostructures

04/11/2017 - 3:30pm to 4:30pm
Speaker(s) / Presenter(s): 
Dr. John Nichols, ORNL
Type of Event (for grouping events):

The existence of strong spin-orbit coupling has brought the iridates to the forefront of materials research, whereas strong electronic correlation has proven to produce a plethora of novel properties within the manganites. The physical properties of interfaces between such materials were investigated by synthesizing a series of artificial superlattices consisting of the 5d paramagnetic metal SrIrO3 and 3d antiferromagnetic insulators AMnO3, where A = Sr or La. Through our experimental investigations by x-ray diffraction, SQUID magnetometry, dc-transport, x-ray circular dichroism, and polarized neutron reflectometry measurements, both novel magnetic and transport properties were observed, which drastically differ from those of the constituent materials and are highly sensitive to the degree of dimensional confinement within the superlattices. Here I will present these results and discuss the implications of these intriguing magnetic and electronic properties.

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