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Contact: Barbara K. Kennedy
science@psu.edu
814-863-4682
Penn State
Caption: Room-temperature Raman spectra of (1) a bare strontium titanate substrate (black curve); (2) a barium-titanate/strontium-titanate superlattice (bllue curve) measured with visible light; and (3) the same superlattice measured with ultraviolet light (red curve). The dashed black line shows the bare strontium titanate substrate spectrum measured with ultraviolet light.
Credit: Xiaoqing Pan, University of Michigan
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