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Title: Growth of electronically distinct manganite thin films by modulating cation stoichiometry

Abstract

Nd1-xSrxMnO3 (NSMO) is a well-known manganite due to close connection between structure, transport, magnetism, and chemistry. Thus, it would be an ideal system to study modification of physical properties by external stimuli including control of stoichiometry in growth. In this work, we show that abrupt change of electronic and magnetic properties can be achieved by subtle change of oxygen partial pressure in pulsed laser deposition. Interestingly, the pressure indeed modulates cation stoichiometry. We clearly observed that the films grown at 150 mTorr and higher showed clear insulator to metal transition and stronger magnetism, commonly found in less hole doping, while the films grown at 130 mTorr and lower showed insulating behavior and weak magnetism. From soft x-ray spectroscopic methods, we clearly observed the compositional difference in those thin films. This result is further supported by scattering of lighter elements in high oxygen partial pressure but not by anion deficiency in growth.

Authors:
 [1];  [1];  [1];  [1];  [2];  [3]; ORCiD logo [2];  [4];  [4];  [4];  [1];  [1]; ORCiD logo [1]
  1. Pusan National Univ., Busan (Korea, Republic of)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Korea Basic Science Inst., Busan (Korea, Republic of)
  4. Pohang Accelerator Lab. (PAL) (Korea, Republic of)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1376539
Alternate Identifier(s):
OSTI ID: 1366574
Grant/Contract Number:  
AC05-00OR22725; Office of Science
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 26; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Ryu, Sangkyun, Lee, Joonhyuk, Ahn, Eunyoung, Kim, Jiwoong, Herklotz, Andreas, Bae, Jong-Seong, Lee, Ho Nyung, Kim, Younghak, Kim, Jae-Young, Jeon, Tae-Yeol, Cho, Jinhyung, Park, Sungkyun, and Jeen, Hyoungjeen. Growth of electronically distinct manganite thin films by modulating cation stoichiometry. United States: N. p., 2017. Web. doi:10.1063/1.4989578.
Ryu, Sangkyun, Lee, Joonhyuk, Ahn, Eunyoung, Kim, Jiwoong, Herklotz, Andreas, Bae, Jong-Seong, Lee, Ho Nyung, Kim, Younghak, Kim, Jae-Young, Jeon, Tae-Yeol, Cho, Jinhyung, Park, Sungkyun, & Jeen, Hyoungjeen. Growth of electronically distinct manganite thin films by modulating cation stoichiometry. United States. doi:10.1063/1.4989578.
Ryu, Sangkyun, Lee, Joonhyuk, Ahn, Eunyoung, Kim, Jiwoong, Herklotz, Andreas, Bae, Jong-Seong, Lee, Ho Nyung, Kim, Younghak, Kim, Jae-Young, Jeon, Tae-Yeol, Cho, Jinhyung, Park, Sungkyun, and Jeen, Hyoungjeen. Mon . "Growth of electronically distinct manganite thin films by modulating cation stoichiometry". United States. doi:10.1063/1.4989578. https://www.osti.gov/servlets/purl/1376539.
@article{osti_1376539,
title = {Growth of electronically distinct manganite thin films by modulating cation stoichiometry},
author = {Ryu, Sangkyun and Lee, Joonhyuk and Ahn, Eunyoung and Kim, Jiwoong and Herklotz, Andreas and Bae, Jong-Seong and Lee, Ho Nyung and Kim, Younghak and Kim, Jae-Young and Jeon, Tae-Yeol and Cho, Jinhyung and Park, Sungkyun and Jeen, Hyoungjeen},
abstractNote = {Nd1-xSrxMnO3 (NSMO) is a well-known manganite due to close connection between structure, transport, magnetism, and chemistry. Thus, it would be an ideal system to study modification of physical properties by external stimuli including control of stoichiometry in growth. In this work, we show that abrupt change of electronic and magnetic properties can be achieved by subtle change of oxygen partial pressure in pulsed laser deposition. Interestingly, the pressure indeed modulates cation stoichiometry. We clearly observed that the films grown at 150 mTorr and higher showed clear insulator to metal transition and stronger magnetism, commonly found in less hole doping, while the films grown at 130 mTorr and lower showed insulating behavior and weak magnetism. From soft x-ray spectroscopic methods, we clearly observed the compositional difference in those thin films. This result is further supported by scattering of lighter elements in high oxygen partial pressure but not by anion deficiency in growth.},
doi = {10.1063/1.4989578},
journal = {Applied Physics Letters},
number = 26,
volume = 110,
place = {United States},
year = {2017},
month = {6}
}

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