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X-ray absorption fine-structure determination of interfacial polarization in SrTiO3 thin films grown on Si(001)

J C Woicik1, F S Aguirre-Tostada2, A Herrera-Gomez2, R Droopad3, Z Yu3, D Schlom4, E Karapetrova5, P Zschack5 and P Pianetta6

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Polarization-dependent x-ray absorption fine structure together with x-ray diffraction have been used to study the local structure in SrTiO3 thin films grown on Si(001). Our data indicate that an interfacial polarization of the SrTiO3 layer by the Si substrate results in a tetragonal distortion of the SrTiO3 unit cell.


PACS

68.55.A- Nucleation and growth

77.84.Dy Niobates, titanates, tantalates, PZT ceramics, etc.

61.05.cj X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.

Subjects

Condensed matter: electrical, magnetic and optical

Surfaces, interfaces and thin films

Dates

Issue T115 (2005)

Received 26 June 2003, accepted for publication 8 December 2003



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