Substitution of Ni for Fe in superconducting depresses the normal-state conductivity but not the magnetic spectral weight
Abstract
In this study, we have performed systematic resistivity and inelastic neutron scattering measurements on Fe0.98-zNizTe0.5Se0.5 samples to study the impact of Ni substitution on the transport properties and the low-energy (≤12meV) magnetic excitations. It is found that, with increasing Ni doping, both the conductivity and superconductivity are gradually suppressed; in contrast, the low-energy magnetic spectral weight changes little. Comparing with the impact of Co and Cu substitution, we find that the effects on conductivity and superconductivity for the same degree of substitution grow systematically as the atomic number of the substituent deviates from that of Fe. The impact of the substituents as scattering centers appears to be greater than any contribution to carrier concentration. The fact that low-energy magnetic spectral weight is not reduced by increased electron scattering indicates that the existence of antiferromagnetic correlations does not depend on electronic states close to the Fermi energy.
- Authors:
-
- Nanjing Univ., Nanjing (China)
- Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- National Institute of Standards and Technology, Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1182503
- Alternate Identifier(s):
- OSTI ID: 1181446; OSTI ID: 1265269
- Report Number(s):
- BNL-107409-2015-JA
Journal ID: ISSN 1098-0121; PRBMDO; R&D Project: PO010; KC0201060
- Grant/Contract Number:
- SC00112704; AC02-05CH11231; AC02-98CH10886; AC05-00OR22725
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 1; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE
Citation Formats
Wang, Jinghui, Zhong, Ruidan, Li, Shichao, Gan, Yuan, Xu, Zhijun, Zhang, Cheng, Ozaki, T., Matsuda, M., Zhao, Yang, Li, Qiang, Xu, Guangyong, Gu, Genda, Tranquada, J. M., Birgeneau, R. J., and Wen, Jinsheng. Substitution of Ni for Fe in superconducting Fe0.98Te0.5Se0.5 depresses the normal-state conductivity but not the magnetic spectral weight. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.91.014501.
Wang, Jinghui, Zhong, Ruidan, Li, Shichao, Gan, Yuan, Xu, Zhijun, Zhang, Cheng, Ozaki, T., Matsuda, M., Zhao, Yang, Li, Qiang, Xu, Guangyong, Gu, Genda, Tranquada, J. M., Birgeneau, R. J., & Wen, Jinsheng. Substitution of Ni for Fe in superconducting Fe0.98Te0.5Se0.5 depresses the normal-state conductivity but not the magnetic spectral weight. United States. https://doi.org/10.1103/PhysRevB.91.014501
Wang, Jinghui, Zhong, Ruidan, Li, Shichao, Gan, Yuan, Xu, Zhijun, Zhang, Cheng, Ozaki, T., Matsuda, M., Zhao, Yang, Li, Qiang, Xu, Guangyong, Gu, Genda, Tranquada, J. M., Birgeneau, R. J., and Wen, Jinsheng. 2015.
"Substitution of Ni for Fe in superconducting Fe0.98Te0.5Se0.5 depresses the normal-state conductivity but not the magnetic spectral weight". United States. https://doi.org/10.1103/PhysRevB.91.014501. https://www.osti.gov/servlets/purl/1182503.
@article{osti_1182503,
title = {Substitution of Ni for Fe in superconducting Fe0.98Te0.5Se0.5 depresses the normal-state conductivity but not the magnetic spectral weight},
author = {Wang, Jinghui and Zhong, Ruidan and Li, Shichao and Gan, Yuan and Xu, Zhijun and Zhang, Cheng and Ozaki, T. and Matsuda, M. and Zhao, Yang and Li, Qiang and Xu, Guangyong and Gu, Genda and Tranquada, J. M. and Birgeneau, R. J. and Wen, Jinsheng},
abstractNote = {In this study, we have performed systematic resistivity and inelastic neutron scattering measurements on Fe0.98-zNizTe0.5Se0.5 samples to study the impact of Ni substitution on the transport properties and the low-energy (≤12meV) magnetic excitations. It is found that, with increasing Ni doping, both the conductivity and superconductivity are gradually suppressed; in contrast, the low-energy magnetic spectral weight changes little. Comparing with the impact of Co and Cu substitution, we find that the effects on conductivity and superconductivity for the same degree of substitution grow systematically as the atomic number of the substituent deviates from that of Fe. The impact of the substituents as scattering centers appears to be greater than any contribution to carrier concentration. The fact that low-energy magnetic spectral weight is not reduced by increased electron scattering indicates that the existence of antiferromagnetic correlations does not depend on electronic states close to the Fermi energy.},
doi = {10.1103/PhysRevB.91.014501},
url = {https://www.osti.gov/biblio/1182503},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 1,
volume = 91,
place = {United States},
year = {Mon Jan 05 00:00:00 EST 2015},
month = {Mon Jan 05 00:00:00 EST 2015}
}
Web of Science
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