Hedgehog Spin-Vortex Crystal Antiferromagnetic Quantum Criticality in Revealed by NMR
Abstract
Two ordering states, antiferromagnetism and nematicity, have been observed in most iron-based superconductors (SCs). In contrast to those SCs, the newly discovered SC CaK(Fe1-xNix)4As4 exhibits an antiferromagnetic (AFM) state, called hedgehog spin-vortex crystal structure, without nematic order, providing the opportunity for the investigation into the relationship between spin fluctuations and SC without any effects of nematic fluctuations. Our 75As nuclear magnetic resonance studies on CaK(Fe1-xNix)4As4 (0≤ x ≤ 0.049) revealed that CaKFe4As4 is located close to a hidden hedgehog SVC AFM quantum-critical point (QCP). The magnetic QCP without nematicity in CaK(Fe1-xNix)4As4 highlights the close connection of spin fluctuations and superconductivity in iron-based SCs. The advantage of stoichiometric composition also makes CaKFe4As4 an ideal platform for further detailed investigation of the relationship between magnetic QCP and superconductivity in iron-based SCs without disorder effects.
- Authors:
-
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
- Publication Date:
- Research Org.:
- Ames Lab., Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1477242
- Alternate Identifier(s):
- OSTI ID: 1473998
- Report Number(s):
- IS-J-9747
Journal ID: ISSN 0031-9007; PRLTAO
- Grant/Contract Number:
- AC02-07CH11358; GBMF4411
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 121; Journal Issue: 13; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Ding, Q. -P., Meier, W. R., Cui, J., Xu, M., Böhmer, A. E., Bud’ko, S. L., Canfield, P. C., and Furukawa, Y. Hedgehog Spin-Vortex Crystal Antiferromagnetic Quantum Criticality in CaK(Fe1-xNix)4As4 Revealed by NMR. United States: N. p., 2018.
Web. doi:10.1103/PhysRevLett.121.137204.
Ding, Q. -P., Meier, W. R., Cui, J., Xu, M., Böhmer, A. E., Bud’ko, S. L., Canfield, P. C., & Furukawa, Y. Hedgehog Spin-Vortex Crystal Antiferromagnetic Quantum Criticality in CaK(Fe1-xNix)4As4 Revealed by NMR. United States. https://doi.org/10.1103/PhysRevLett.121.137204
Ding, Q. -P., Meier, W. R., Cui, J., Xu, M., Böhmer, A. E., Bud’ko, S. L., Canfield, P. C., and Furukawa, Y. Wed .
"Hedgehog Spin-Vortex Crystal Antiferromagnetic Quantum Criticality in CaK(Fe1-xNix)4As4 Revealed by NMR". United States. https://doi.org/10.1103/PhysRevLett.121.137204. https://www.osti.gov/servlets/purl/1477242.
@article{osti_1477242,
title = {Hedgehog Spin-Vortex Crystal Antiferromagnetic Quantum Criticality in CaK(Fe1-xNix)4As4 Revealed by NMR},
author = {Ding, Q. -P. and Meier, W. R. and Cui, J. and Xu, M. and Böhmer, A. E. and Bud’ko, S. L. and Canfield, P. C. and Furukawa, Y.},
abstractNote = {Two ordering states, antiferromagnetism and nematicity, have been observed in most iron-based superconductors (SCs). In contrast to those SCs, the newly discovered SC CaK(Fe1-xNix)4As4 exhibits an antiferromagnetic (AFM) state, called hedgehog spin-vortex crystal structure, without nematic order, providing the opportunity for the investigation into the relationship between spin fluctuations and SC without any effects of nematic fluctuations. Our 75As nuclear magnetic resonance studies on CaK(Fe1-xNix)4As4 (0≤ x ≤ 0.049) revealed that CaKFe4As4 is located close to a hidden hedgehog SVC AFM quantum-critical point (QCP). The magnetic QCP without nematicity in CaK(Fe1-xNix)4As4 highlights the close connection of spin fluctuations and superconductivity in iron-based SCs. The advantage of stoichiometric composition also makes CaKFe4As4 an ideal platform for further detailed investigation of the relationship between magnetic QCP and superconductivity in iron-based SCs without disorder effects.},
doi = {10.1103/PhysRevLett.121.137204},
journal = {Physical Review Letters},
number = 13,
volume = 121,
place = {United States},
year = {2018},
month = {9}
}
Web of Science
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