### Session K1: Poster Session II (2:00pm - 5:00pm)

2:00 PM–2:00 PM, Tuesday, March 22, 2011
Room: Hall D

Abstract ID: BAPS.2011.MAR.K1.294

### Abstract: K1.00294 : Metal-insulator transition characteristics of epitaxial and polycrystalline SmNiO$_{3}$ thin films

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#### Authors:

Sieu Ha
(Harvard University)

Gulgun Aydogdu
(Harvard University)

Shriram Ramanathan
(Harvard University)

SmNiO$_{3}$ (SNO) is known to exhibit a sharp insulator to metal transition at 130 $^{\circ}$C in bulk form and is a candidate material for utilization in advanced electronic devices such as memory and neuromorphic circuits. We present growth and characterization of SNO thin films deposited on LaAlO$_{3}$ and Si single crystals. Structural properties such as crystallinity, strain, and stoichiometry are examined with x-ray diffraction and x-ray photoelectron spectroscopy. Temperature-dependent resistance measurements are performed, and a metal-insulator transition is observed for films on both substrates. We investigate how resistance changes are affected by thermal cycling and the role of surface oxygen loss on electrical characteristics.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.K1.294