Effect of an interface boundary on the magnetooptical and magnetotransport properties of La0.67Ca0.33MnO3/La0.67Sr0.33MnO3 heterostructures
Artikel i vetenskaplig tidskrift, 2010

The optical, magnetooptical (Kerr effect and magnetotransmission), and magnetotransport properties of La2/3Ca1/3MnO3/La2/3Sr1/3MnO3 and La2/3Ca1/3MnO3/SrTiO3/La2/3Sr1/3MnO3 heterostructures on SrTiO3 substrates are studied. The contribution of the interface boundary to the magnetotransmission is typical of a material with a transitional composition. It is found that a 2-nm-thick SrTiO3 spacer does not influence the shape and position of the magnetotransmission peak in a field normal to the surface of the heterostructure but increases the contribution of the upper layer to the magnetotransmission in the Voigt geometry and also enhances the magnetoresistance that is due to the tunneling of spin-polarized carriers through the spacer. The Kerr spectra taken of the heterostructures are typical of single-layer single-crystal films.

manganites

transport

films

spectroscopy

microstructure

Författare

Y. P. Sukhorukov

Russian Academy of Sciences

A. V. Telegin

Russian Academy of Sciences

E. A. Gan'shina

Moscow State University

Evgeni Stepantsov

Russian Academy of Sciences

A. N. Vinogradov

Moscow State University

Floriana Lombardi

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Dag Winkler

Chalmers, Mikroteknologi och nanovetenskap (MC2)

Technical Physics

1063-7842 (ISSN) 1090-6525 (eISSN)

Vol. 55 8 1161-1167

Ämneskategorier

Fysik

DOI

10.1134/S1063784210080141