Photocarrier injection and the I–V characteristics of La0.8Sr0.2MnO3/SrTiO3:Nb heterojunctions

Ultimate photovoltage in perovskite oxide heterostructures with critical film thickness

“…Cong Wang, Kui-juan Jin, a͒ Rui-qiang Zhao, Hui-bin Lu, Hai-zhong Guo, Chen Ge, Meng He, Can Wang, and Guo-zhen Yang Interface region plays a crucial role in many novel physical properties of perovskite heterostructures, such as the occurring of the superconductivity at the interface layer between two insulating oxides LaAlO 3 and SrTiO 3 , 1,2 polarization enhancement in oxide superlattices CaTiO 3 / SrTiO 3 / BaTiO 3 , 3 positive magnetoresistance 4 and novel photoelectric characteristics 5,6 in oxide heterostructures of La 0.9 Sr 0.1 MnO 3 / SrNb 0.01 Ti 0.99 O 3 ͑LSMO/SNTO͒ and La 0.7 Sr 0.3 MnO 3 / Si. In this letter, we present another important role the interface region played on photoelectric effect in the heterostructures of p-type LSMO on the substrates of n-type SrTiO 3 ͑0.8 wt % Nb-doped͒ ͑SNTO͒ and n-type Si, respectively.…”

Electrical properties of epitaxial junctions betweenNb:SrTiO3and optimally doped, underdoped, and Zn-dopedRamadan1, Ogale2, Dhar3 et al. 2005Phys. Rev. B353160View full textAdd to dashboardCite

“…Most efforts in this domain have been primarily directed towards the growth and microstructural characterization of epitaxial interfaces, and the measurements of the electrical properties of the interfaces are now beginning to grow. [37][38][39][40][41][42][43][44][45][46][47] In this work we have examined the growth and properties ͑structural and electrical͒ of the interface between an oxide superconductor YBa 2 Cu 3 O 7−␦ ͑YBCO͒ and an n-type oxide semiconductor 0.5 wt. % Nb-doped SrTiO 3 ͑NSTO͒.…”

Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes

“…39 On the other hand, according to the theory proposed by Morozovska et al, the conductivity types of electrodes should affect the final screening effect for a ferroelectric layer, and only the polarization with the direction opposite to that of the built-in electric field can be effectively screened when two thin electrodes with different conductivity types are applied. 40 The LSMO/PTO/SRO multilayer could be considered as a semiconductor/ferroelectric/ metal model, since LSMO is a p-type semiconductor, 41,42 and SRO is metallic. 43 Thus, there exists an intrinsic built-in electric field which helps to stabilize the polarization with the reversed direction (away from LSMO).…”