Terahertz-driven phonon upconversion in SrTiO 3

(1)

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STO 50 nm film on LSAT

X-ray intensity

2 theta (degrees) STO (002)

LSAT (002)

cSTO=3.925 A c

LSAT=3.867 A

(2)

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STO/LSAT RSM (−103)

STO

LSAT

−1.15 −1.1 −1.05 −1 −0.95 −0.9 2.9

2.95

3

3.05

Log10 (Intensity)

−3

−2

−1 0

(3)

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