UV control of electric/magnetic properties of transition metal oxides grown on SrTiO3 single crystal

Author

Nishikawa, Hisashi

Author_Institution

Fac. of Biol.-Oriented Sci. & Technol., Kinki Univ., Kinokawa, Japan

fYear

2013

fDate

6-9 July 2013

Firstpage

75

Lastpage

76

Abstract

SrTiO₃ (STO) shows notable photoconductivity by irradiation of UV light of 387 nm or shorter wavelength. The photoconductivity is caused by the excitation of valence electron to the conduction band beyond the band gap of 3.2 eV. It has been reported that the STO photocarrier can control the electric and magnetic properties of (La, Sr)MnO₃ (LSMO) via transferring the STO photocarrier to the LSMO beyond the hetero-interface. We propose that the electronic properties of various perovskite type oxides can be controlled by the photocarrier transferred from STO. We have found the resistance increase of LaFeO₃ the under UV irradiation.

Keywords

conduction bands; electrical resistivity; energy gap; interface magnetism; lanthanum compounds; photoconductivity; strontium compounds; ultraviolet radiation effects; (LaSr)MnO₃-SrTiO₃; UV control; UV light irradiation; band gap; conduction band; electric properties; electronic properties; heterointerface; magnetic properties; perovskite type oxides; photocarrier; photoconductivity; resistance; transition metal oxides; valence electron excitation; wavelength 387 nm; Doping; Electrical resistance measurement; Magnetic properties; Photoconductivity; Radiation effects; Resistance; Xenon; SrTiO3; hetero-interface; photocarrier transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Infocomm Technology (ICAIT), 2013 6th International Conference on

Conference_Location

Hsinchu

Print_ISBN

978-1-4799-0464-8

Type

conf

DOI

10.1109/ICAIT.2013.6621501

Filename

6621501