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Title: Intralayer doping effects on the high-energy magnetic correlations in NaFeAs

Abstract

We used resonant inelastic x-ray scattering (RIXS) and dynamical susceptibility calculations to study the magnetic excitations in NaFe1$-$xCoxAs ( x=0 , 0.03, and 0.08). Despite a relatively low ordered magnetic moment, collective magnetic modes are observed in parent compounds (x=0) and persist in optimally (x= 0.03) and overdoped (x = 0.08) samples. Their magnetic bandwidths are unaffected by doping within the range investigated. High-energy magnetic excitations in iron pnictides are robust against doping and present irrespectively of the ordered magnetic moment. Nonetheless, Co doping slightly reduces the overall magnetic spectral weight, differently from previous studies on hole-doped BaFe2As2 , where it was observed constant. Finally, we demonstrate that the doping evolution of magnetic modes is different for the dopants being inside or outside the Fe-As layer.

Authors:
 [1];  [2];  [3];  [1];  [4];  [1];  [1];  [5];  [5];  [6];  [1]
  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Dept. of Synchrotron Radiation and Nanotechnology
  2. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Dept. of Synchrotron Radiation and Nanotechnology; Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics
  3. Indian Inst. of Science, Bangalore (India). Dept. of Physics
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Dept. of Synchrotron Radiation and Nanotechnology; Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  5. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics
  6. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics; Collaborative Innovation Center for Quantum Matters, Beijing (China)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1340388
Report Number(s):
BNL-112579-2016-JA
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
SC0012704; 200021L 141325
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 13; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Pelliciari, Jonathan, Huang, Yaobo, Das, Tanmoy, Dantz, Marcus, Bisogni, Valentina, Velasco, Paul Olalde, Strocov, Vladimir N., Xing, Lingyi, Wang, Xiancheng, Jin, Changqing, and Schmitt, Thorsten. Intralayer doping effects on the high-energy magnetic correlations in NaFeAs. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.134515.
Pelliciari, Jonathan, Huang, Yaobo, Das, Tanmoy, Dantz, Marcus, Bisogni, Valentina, Velasco, Paul Olalde, Strocov, Vladimir N., Xing, Lingyi, Wang, Xiancheng, Jin, Changqing, & Schmitt, Thorsten. Intralayer doping effects on the high-energy magnetic correlations in NaFeAs. United States. doi:10.1103/PhysRevB.93.134515.
Pelliciari, Jonathan, Huang, Yaobo, Das, Tanmoy, Dantz, Marcus, Bisogni, Valentina, Velasco, Paul Olalde, Strocov, Vladimir N., Xing, Lingyi, Wang, Xiancheng, Jin, Changqing, and Schmitt, Thorsten. Tue . "Intralayer doping effects on the high-energy magnetic correlations in NaFeAs". United States. doi:10.1103/PhysRevB.93.134515. https://www.osti.gov/servlets/purl/1340388.
@article{osti_1340388,
title = {Intralayer doping effects on the high-energy magnetic correlations in NaFeAs},
author = {Pelliciari, Jonathan and Huang, Yaobo and Das, Tanmoy and Dantz, Marcus and Bisogni, Valentina and Velasco, Paul Olalde and Strocov, Vladimir N. and Xing, Lingyi and Wang, Xiancheng and Jin, Changqing and Schmitt, Thorsten},
abstractNote = {We used resonant inelastic x-ray scattering (RIXS) and dynamical susceptibility calculations to study the magnetic excitations in NaFe1$-$xCoxAs ( x=0 , 0.03, and 0.08). Despite a relatively low ordered magnetic moment, collective magnetic modes are observed in parent compounds (x=0) and persist in optimally (x= 0.03) and overdoped (x = 0.08) samples. Their magnetic bandwidths are unaffected by doping within the range investigated. High-energy magnetic excitations in iron pnictides are robust against doping and present irrespectively of the ordered magnetic moment. Nonetheless, Co doping slightly reduces the overall magnetic spectral weight, differently from previous studies on hole-doped BaFe2As2 , where it was observed constant. Finally, we demonstrate that the doping evolution of magnetic modes is different for the dopants being inside or outside the Fe-As layer.},
doi = {10.1103/PhysRevB.93.134515},
journal = {Physical Review B},
number = 13,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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