Uniaxial pressure effect on the magnetic ordered moment and transition temperatures in ( )
- Rice Univ., Houston, TX (United States)
- Columbia Univ., New York, NY (United States)
- Beijing Normal Univ. (China)
- Japan Atomic Energy Agency (JAEA), Tokai (Japan)
- McMaster Univ., Hamilton, ON (Canada)
- Zhejiang Univ., Hangzhou (China)
- Univ. of Tokyo (Japan)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- TRIUMF, Vancouver, BC (Canada)
- Inst. Laue-Langevin (ILL), Grenoble (France)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
- Rice Univ., Houston, TX (United States); Beijing Normal Univ. (China)
In this paper, we use neutron diffraction and muon spin relaxation to study the effect of in-plane uniaxial pressure on the antiferromagnetic (AF) orthorhombic phase in BaFe2As2 and its Co- and Ni-substituted members near optimal superconductivity. In the low-temperature AF ordered state, uniaxial pressure necessary to detwin the orthorhombic crystals also increases the magnetic ordered moment, reaching an 11% increase under 40 MPa for BaFe1.9Co0.1As2, and a 15% increase for BaFe1.915Ni0.085As2. We also observe an increase of the AF ordering temperature (TN) of about 0.25 K/MPa in all compounds, consistent with density functional theory calculations that reveal better Fermi surface nesting for itinerant electrons under uniaxial pressure. Finally, the doping dependence of the magnetic ordered moment is captured by combining dynamical mean field theory with density functional theory, suggesting that the pressure-induced moment increase near optimal superconductivity is closely related to quantum fluctuations and the nearby electronic nematic phase.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Robert A. Welch Foundation (United States); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China
- Grant/Contract Number:
- AC05-00OR22725; DMR-1362219; DMR-1436006; DMR-1308603; DMR-1610633; DMR-1436095; C-1839; 11674030; 2016YFA0302300
- OSTI ID:
- 1394391
- Alternate ID(s):
- OSTI ID: 1344188
- Journal Information:
- Physical Review B, Vol. 95, Issue 6; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
c-axis pressure-induced antiferromagnetic order in optimally P-doped BaFe2(As0.70P0.30)2 superconductor
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journal | September 2018 |
Spin fluctuation anisotropy as a probe of orbital-selective hole-electron quasiparticle excitations in detwinned
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journal | October 2019 |
Uniaxial -axis pressure effects on the underdoped superconductor
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journal | January 2020 |
Spin Waves in Detwinned
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journal | August 2018 |
High-K dielectric sulfur-selenium alloys
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journal | May 2019 |
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