Single crystal functional oxides on silicon

Saidur Rahman Bakaul, Claudy Rayan Serrao, Michelle Lee, Chun Wing Yeung, Asis Sarker, Shang-Lin Hsu, Ajay Kumar Yadav, Liv Dedon, Long You, Asif Islam Khan, James David Clarkson, Chenming Hu, Ramamoorthy Ramesh and Sayeef Salahuddin ()
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Saidur Rahman Bakaul: University of California
Claudy Rayan Serrao: University of California
Michelle Lee: University of California
Chun Wing Yeung: University of California
Asis Sarker: University of California
Shang-Lin Hsu: Lawrence Berkeley National Laboratory
Ajay Kumar Yadav: University of California
Liv Dedon: University of California
Long You: University of California
Asif Islam Khan: University of California
James David Clarkson: University of California
Chenming Hu: University of California
Ramamoorthy Ramesh: University of California
Sayeef Salahuddin: University of California

Nature Communications, 2016, vol. 7, issue 1, 1-5

Abstract: Abstract Single-crystalline thin films of complex oxides show a rich variety of functional properties such as ferroelectricity, piezoelectricity, ferro and antiferromagnetism and so on that have the potential for completely new electronic applications. Direct synthesis of such oxides on silicon remains challenging because of the fundamental crystal chemistry and mechanical incompatibility of dissimilar interfaces. Here we report integration of thin (down to one unit cell) single crystalline, complex oxide films onto silicon substrates, by epitaxial transfer at room temperature. In a field-effect transistor using a transferred lead zirconate titanate 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.

Date: 2016
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DOI: 10.1038/ncomms10547

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