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Title: Structural and subband changes at the LaAlO{sub 3}/SrTiO{sub 3} interface investigated by two-dimensional correlation spectroscopy

Abstract

The interplay among many ground states in correlated electron materials, especially at the LaAlO{sub 3}/SrTiO{sub 3} interface is central in deeply understanding the physical characteristics and improving further applications of these materials. Here, we use two-dimensional infrared correlation spectroscopy to study the influence of magnetic fields and temperature on the mid-infrared spectral responsivity of the interface. The magnetic field plays the main role at temperatures below the transition temperature, T{sub C}. Two additional spectral peaks were identified at wavelengths of 2800 nm and 3400 nm, when compared with our prior studies. All of these response bands are related to the spin-orbit coupling effect and crystal structure changes. Detailed structural and subband changes in the interface are also investigated.

Authors:
; ; ; ;  [1];  [2];  [1]
  1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22493915
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 6; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION SPECTROSCOPY; ALUMINATES; COMPARATIVE EVALUATIONS; ELECTRON CORRELATION; GROUND STATES; INFRARED SPECTRA; INTERFACES; LANTHANUM COMPOUNDS; L-S COUPLING; MAGNETIC FIELDS; STRONTIUM TITANATES; TRANSITION TEMPERATURE; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS

Citation Formats

Feng, Xin, Zhao, Kun, E-mail: zhk@cup.edu.cn, Zhan, Hong-Lei, Xiang, Wen-Feng, Lu, Zhi-Qing, Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, and Xiao, Li-Zhi. Structural and subband changes at the LaAlO{sub 3}/SrTiO{sub 3} interface investigated by two-dimensional correlation spectroscopy. United States: N. p., 2015. Web. doi:10.1063/1.4923239.
Feng, Xin, Zhao, Kun, E-mail: zhk@cup.edu.cn, Zhan, Hong-Lei, Xiang, Wen-Feng, Lu, Zhi-Qing, Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, & Xiao, Li-Zhi. Structural and subband changes at the LaAlO{sub 3}/SrTiO{sub 3} interface investigated by two-dimensional correlation spectroscopy. United States. doi:10.1063/1.4923239.
Feng, Xin, Zhao, Kun, E-mail: zhk@cup.edu.cn, Zhan, Hong-Lei, Xiang, Wen-Feng, Lu, Zhi-Qing, Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249, and Xiao, Li-Zhi. Mon . "Structural and subband changes at the LaAlO{sub 3}/SrTiO{sub 3} interface investigated by two-dimensional correlation spectroscopy". United States. doi:10.1063/1.4923239.
@article{osti_22493915,
title = {Structural and subband changes at the LaAlO{sub 3}/SrTiO{sub 3} interface investigated by two-dimensional correlation spectroscopy},
author = {Feng, Xin and Zhao, Kun, E-mail: zhk@cup.edu.cn and Zhan, Hong-Lei and Xiang, Wen-Feng and Lu, Zhi-Qing and Beijing Key Laboratory of Optical Detection Technology for Oil and Gas, China University of Petroleum, Beijing 102249 and Xiao, Li-Zhi},
abstractNote = {The interplay among many ground states in correlated electron materials, especially at the LaAlO{sub 3}/SrTiO{sub 3} interface is central in deeply understanding the physical characteristics and improving further applications of these materials. Here, we use two-dimensional infrared correlation spectroscopy to study the influence of magnetic fields and temperature on the mid-infrared spectral responsivity of the interface. The magnetic field plays the main role at temperatures below the transition temperature, T{sub C}. Two additional spectral peaks were identified at wavelengths of 2800 nm and 3400 nm, when compared with our prior studies. All of these response bands are related to the spin-orbit coupling effect and crystal structure changes. Detailed structural and subband changes in the interface are also investigated.},
doi = {10.1063/1.4923239},
journal = {AIP Advances},
number = 6,
volume = 5,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}