Magnetoreflection and Kerr Effect in La2/3Ba1/3MnO3 Films with a Variant Structure

A correlation between the effect of magnetoreflection of natural light and tunnel magnetoresistance has been found in La 2/3 Ba 1/3 MnO 3 films with a variant structure grown on ZrO 2 (Y 2 O 3 ) substrates. It is shown that the magnetoreflection effect and giant magnetoresistance in these films are...

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Veröffentlicht in:Optics and spectroscopy 2020, Vol.128 (1), p.42-48
Hauptverfasser: Telegin, A. V., Bessonova, V. A., Sukhorukov, Yu. P., Nosov, A. P., Gan’shina, E. A.
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container_end_page 48
container_issue 1
container_start_page 42
container_title Optics and spectroscopy
container_volume 128
creator Telegin, A. V.
Bessonova, V. A.
Sukhorukov, Yu. P.
Nosov, A. P.
Gan’shina, E. A.
description A correlation between the effect of magnetoreflection of natural light and tunnel magnetoresistance has been found in La 2/3 Ba 1/3 MnO 3 films with a variant structure grown on ZrO 2 (Y 2 O 3 ) substrates. It is shown that the magnetoreflection effect and giant magnetoresistance in these films are maximum in the region of magnetic ordering near room temperature ( T C ≈ 295 K). Magnetoreflection spectra of a La 2/3 Ba 1/3 MnO 3 film with a variant structure are formed via the same mechanisms as for films without a variant structure and can be described within the theory of the magnetorefractive effect. The field and temperature dependences of the magnetoreflection exhibit the presence of an additional low-temperature contribution to the reflection of a La 2/3 Ba 1/3 MnO 3 film due to the tunneling of spin-polarized electrons through structural domain boundaries.
doi_str_mv 10.1134/S0030400X20010233
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subjects Electron spin
Giant magnetoresistance
Lasers
Low temperature
Magnetoresistance
Magnetoresistivity
Natural lighting
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Room temperature
Spectroscopy of Condensed Matter
Substrates
Tunnel magnetoresistance
Yttrium oxide
Zirconium dioxide
title Magnetoreflection and Kerr Effect in La2/3Ba1/3MnO3 Films with a Variant Structure
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