Single crystalline thin films of complex oxides show a rich variety of functional properties such as ferroelectricity, piezoelectricity, ferro and antiferromagnetism etc. that have the potential for completely new electronic applications (1-2). Direct synthesis of such oxides on Si remains challenging due to the fundamental crystal chemistry and mechanical incompatibility of dissimilar interfaces (3-16). Here we report integration of thin (down to 1 unit cell) single crystalline, complex oxide films onto Si substrates, by epitaxial transfer at room temperature. In a field effect transistor using a transferred Pb0.2Zr0.8TiO3 (PZT) layer as the gate insulator, we demonstrate direct reversible control of the semiconductor channel charge with polarization state. These results represent the realization of long pursued but yet to be demonstrated single crystal functional oxides on-demand on silicon.
@article{arxiv.1511.06832,
title = {Single Crystal Functional Oxides on Silicon},
author = {Saidur Rahman Bakaul and Claudy Rayan Serrao and Michelle Lee and Chun Wing Yeung and Asis Sarker and Shang-Lin Hsu and Ajay Yadav and Liv Dedon and Long You and Asif Islam Khan and James David Clarkson and Chenming Hu and Ramamoorthy Ramesh and Sayeef Salahuddin},
journal= {arXiv preprint arXiv:1511.06832},
year = {2015}
}