D. D. Sarma (Special SIMES Seminar)

Date(s) - Jul 20 2015
11:00 AM - 12:00 PM

Shasta Room, Bldg. 40, Room 361


Understanding heterostructures with the help of high energy photoemission spectroscopy

D. D. Sarma

Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru 560012, India

Department of Physics and Astronomy, Uppsala University, Sweden

Council for Scientific and Industrial Research – Network of Institute for Solar Energy (CSIR-NISE), New Delhi, India


 It is in general difficult to probe directly the nature of interface states of any heterostructured material due to the fact that these are typically buried under a depth and represent a very small volume fraction of the entire sample. We have shown in recent times that x-ray photoelectron spectroscopy with a widely tunable photon energy can be used very effectively to obtain spatially resolved electronic structure information, thereby making it the ideal probe to investigate interface properties in diverse heterostructured systems, such as LaAlO3-SrTiO3, magnetic tunnel junctions with CoFeB and MgO, and optically active highly luminescent semiconductor nanoparticles. I shall discuss some of these results in this seminar.

Email: sarma@sscu.iisc.ernet.in and sarma.dd@gmail.com