Intralayer doping effects on the high-energy magnetic correlations in NaFeAs
- Paul Scherrer Inst. (PSI), Villigen (Switzerland). Dept. of Synchrotron Radiation and Nanotechnology
- 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
- Indian Inst. of Science, Bangalore (India). Dept. of Physics
- 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)
- Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics, Inst. of Physics
- 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)
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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704; 200021L 141325
- OSTI ID:
- 1340388
- Report Number(s):
- BNL-112579-2016-JA; PRBMDO
- Journal Information:
- Physical Review B, Vol. 93, Issue 13; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Reciprocity between local moments and collective magnetic excitations in the phase diagram of BaFe2(As1−xPx)2
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journal | November 2019 |
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