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Electronic-grade epitaxial (111) KTaO3 heterostructures
Jieun Kim, Muqing Yu, Jung-Woo Lee +13
KTaO3 has recently attracted attention as a model system to study the interplay of quantum paraelectricity, spin-orbit coupling, and superconductivity. However, the high and low va…
Ultrafast generation and detection of propagating coherent acoustic phonon wave packets in ultra-thin iron pnictide films
D. Cheng, B. Song, J. H. Kang +9
We observe pronounced oscillations in differential reflectivity of 9 nm and 60 nm BaFe\textsubscript{2}As\textsubscript{2} (Ba-122) thin films using ultrafast optical spectroscopy.…
Microscopic piezoelectric behavior of clamped and membrane (001) PMN-30PT thin films
A. Brewer, S. Lindemann, B. Wang +13
Bulk single-crystal relaxor-ferroelectrics, like Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT), are widely known for their large piezoelectricity. This is attributed to polarization rotation wh…
Low-Voltage Magnetoelectric Coupling in Membrane Heterostructures
S. Lindemann, J. Irwin, G. -Y. Kim +8
Strain-mediated magnetoelectric (ME) coupling in ferroelectric (FE) / ferromagnetic (FM) heterostructures offers a unique opportunity for both fundamental scientific research and l…
Oxide two-dimensional electron gas with high mobility at room-temperature
Kitae Eom, Hanjong Paik, Jinsol Seo +6
The prospect of 2-dimensional electron gases (2DEGs) possessing high mobility at room temperature in wide-bandgap perovskite stannates is enticing for oxide electronics, particular…
In-plane quasi-single-domain BaTiO via interfacial symmetry engineering
J. W. Lee, K. Eom, T. R. Paudel +18
The control of the in-plane domain evolution in ferroelectric thin films is not only critical to understanding ferroelectric phenomena but also to enabling functional device fabric…