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Title: Charge transfer and orbital reconstruction in the (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices

Abstract

The structural, electronic, and magnetic properties of (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices have been investigated based on the first principles calculations. An obvious Jahn-Teller distortion, which depends on m, n, appears in MnO{sub 6} octahedron in the superlattices. The stretch along c-axis of MnO{sub 6} octahedron at the interface lifts the Mn e{sub g} orbital degeneracy, with electrons preferring the lower energy 3z{sup 2}−r{sup 2} to the higher energy x{sup 2}−y{sup 2}. Benefitting from the charge transfer at the interface, the still occupied x{sup 2}−y{sup 2} orbital can mediate a robust in-plane double exchange interaction. La{sub 2/3}Sr{sub 1/3}MnO{sub 3} block is ferromagnetic and metallic, even for the superlattice with m = n = 1.

Authors:
 [1];  [2]; ; ; ;  [1]
  1. Collaborative Innovation Center of Advanced Microstrucutres, Lab of Solid State Microstructures, School of Physics, Nanjing University, Nanjing 210093 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22410191
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 18; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; EXCHANGE INTERACTIONS; FERROMAGNETIC MATERIALS; FERROMAGNETISM; INTERFACES; JAHN-TELLER EFFECT; LANTHANUM COMPOUNDS; MAGNETIC PROPERTIES; MANGANATES; MANGANESE OXIDES; RUTHENIUM OXIDES; STRONTIUM COMPOUNDS; SUPERLATTICES

Citation Formats

Lv, Kai, School of Physics and Electronic information, Huaibei Normal University, Huaibei 235000, Zhu, H. P., Zou, W. Q., Zhang, F. M., and Wu, X. S., E-mail: xswu@nju.edu.cn. Charge transfer and orbital reconstruction in the (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices. United States: N. p., 2015. Web. doi:10.1063/1.4921115.
Lv, Kai, School of Physics and Electronic information, Huaibei Normal University, Huaibei 235000, Zhu, H. P., Zou, W. Q., Zhang, F. M., & Wu, X. S., E-mail: xswu@nju.edu.cn. Charge transfer and orbital reconstruction in the (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices. United States. doi:10.1063/1.4921115.
Lv, Kai, School of Physics and Electronic information, Huaibei Normal University, Huaibei 235000, Zhu, H. P., Zou, W. Q., Zhang, F. M., and Wu, X. S., E-mail: xswu@nju.edu.cn. Thu . "Charge transfer and orbital reconstruction in the (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices". United States. doi:10.1063/1.4921115.
@article{osti_22410191,
title = {Charge transfer and orbital reconstruction in the (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices},
author = {Lv, Kai and School of Physics and Electronic information, Huaibei Normal University, Huaibei 235000 and Zhu, H. P. and Zou, W. Q. and Zhang, F. M. and Wu, X. S., E-mail: xswu@nju.edu.cn},
abstractNote = {The structural, electronic, and magnetic properties of (La{sub 2/3}Sr{sub 1/3}MnO{sub 3}){sub m}/(SrRuO{sub 3}){sub n} superlattices have been investigated based on the first principles calculations. An obvious Jahn-Teller distortion, which depends on m, n, appears in MnO{sub 6} octahedron in the superlattices. The stretch along c-axis of MnO{sub 6} octahedron at the interface lifts the Mn e{sub g} orbital degeneracy, with electrons preferring the lower energy 3z{sup 2}−r{sup 2} to the higher energy x{sup 2}−y{sup 2}. Benefitting from the charge transfer at the interface, the still occupied x{sup 2}−y{sup 2} orbital can mediate a robust in-plane double exchange interaction. La{sub 2/3}Sr{sub 1/3}MnO{sub 3} block is ferromagnetic and metallic, even for the superlattice with m = n = 1.},
doi = {10.1063/1.4921115},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 18,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}