Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNbxTi1−xO3/KTaO3. Issue 44 (31st October 2017)

• Record Type: Journal Article
• Authors: Chen, Jikun; Ke, Xinyou; Wang, Jiaou; Yajima, Takeaki; Qian, Haijie; Sun, Song
• Is Part Of: Physical chemistry chemical physics. Volume 19:Issue 44(2017)
• Page Start: 29913
• Page End: 29917
• Publication Date: 2017-10-31
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c7cp06495k
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : A distinct transportation characteristic of conduction band splitting is achieved by coupling the carriers with randomly distributed lattice-dipoles for strain-distorted SrNb x Ti1− x O3 /KTaO3 . Abstract : Strong electron-correlations can result in un-conventional transportation behaviour, such as metal-insulator transitions, high temperature superconductivity and bad metal conduction. Here we report a distinct transportation characteristic achieved by actively coupling the carriers with randomly distributed lattice-dipoles for strain-distorted SrNb x Ti1− x O3 . The strong electron correlations split the conduction band, and lead to a distinguished thermal-emitted carrier transportation with an activation energy of ∼10 −2 eV. Further consistency was demonstrated by the respective changes in orbital configurations observed in near edge X-ray absorption fine structures. The present investigation demonstrates new mechanisms for regulating the carrier transportation using polaronic electron correlations.