Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNbxTi1-xO3/KTaO3

Jikun Chen; Xinyou Ke; Jiaou Wang; Takeaki Yajima; Haijie Qian; Song Sun

doi:10.1039/c7cp06495k

Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNb_xTi_1-xO₃/KTaO₃

Jikun Chen, Xinyou Ke, Jiaou Wang, Takeaki Yajima, Haijie Qian, Song Sun

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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_xTi_1-xO₃. 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.

Original language	English
Pages (from-to)	29913-29917
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	19
Issue number	44
DOIs	https://doi.org/10.1039/c7cp06495k
Publication status	Published - 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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10.1039/c7cp06495k

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@article{afd71fc4e4e1401291ac30b053ea22c1,

title = "Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNbxTi1-xO3/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 SrNbxTi1-xO3. 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.",

author = "Jikun Chen and Xinyou Ke and Jiaou Wang and Takeaki Yajima and Haijie Qian and Song Sun",

note = "Funding Information: This work is supported by the Fundamental Research Funds for the Central Universities (USTB), National Natural Science Foundation of China (No. 51602022, No. 61674013 and No. 11575227), and JC also appreciates the Japanese Society for the Promotion of Science (Fellowship ID: P15363). We appreciate useful discussions or technical support from Prof. Akira Toriumi from the University of Tokyo (Japan), and Ms Jie Xiao and Prof. Lidong Chen in the Shanghai Institute of Ceramics, Chinese Academy of Sciences. NEXAFS measurement was carried out using synchrotron radiation at beam line 4B9B of Beijing Synchrotron Radiation Facility.",

year = "2017",

doi = "10.1039/c7cp06495k",

language = "English",

volume = "19",

pages = "29913--29917",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "44",

}

TY - JOUR

T1 - Dipole-correlated carrier transportation and orbital reconfiguration in strain-distorted SrNbxTi1-xO3/KTaO3

AU - Chen, Jikun

AU - Ke, Xinyou

AU - Wang, Jiaou

AU - Yajima, Takeaki

AU - Qian, Haijie

AU - Sun, Song

N1 - Funding Information: This work is supported by the Fundamental Research Funds for the Central Universities (USTB), National Natural Science Foundation of China (No. 51602022, No. 61674013 and No. 11575227), and JC also appreciates the Japanese Society for the Promotion of Science (Fellowship ID: P15363). We appreciate useful discussions or technical support from Prof. Akira Toriumi from the University of Tokyo (Japan), and Ms Jie Xiao and Prof. Lidong Chen in the Shanghai Institute of Ceramics, Chinese Academy of Sciences. NEXAFS measurement was carried out using synchrotron radiation at beam line 4B9B of Beijing Synchrotron Radiation Facility.

PY - 2017

Y1 - 2017

N2 - 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 SrNbxTi1-xO3. 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.

AB - 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 SrNbxTi1-xO3. 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.

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