Title :
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
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;
Conference_Titel :
Advanced Infocomm Technology (ICAIT), 2013 6th International Conference on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4799-0464-8
DOI :
10.1109/ICAIT.2013.6621501
