Temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped
Abstract
We use unpolarized and polarized neutron scattering to study the temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe 0.9785Co 0.0215As, with coexisting superconductivity (T c ≈ 19 K) and weak antiferromagnetic order ( T N ≈ 30 K, ordered moment ≈ 0.02 μ B/Fe). A single spin resonance mode with intensity tracking the superconducting order parameter is observed, although energy of the mode only softens slightly upon approaching T c. Polarized neutron scattering reveals that the single resonance is mostly isotropic in spin space, similar to overdoped NaFe 0.935Co 0.045As but different from optimal electron-, hole-, and isovalently doped BaFe 2As 2 compounds, all featuring an additional prominent anisotropic component. Spin anisotropy in NaFe 0.9785Co 0.0215As is instead present at energies below the resonance, which becomes partially gapped below T c, similar to the situation in optimally doped YBa 2Cu 3O 6.9. Here, our results indicate that anisotropic spin fluctuations in NaFe1–xCoxAs appear in the form of a resonance in the underdoped regime, become partially gapped below T c near optimal doping, and disappear in overdoped compounds.
- Authors:
-
- Rice Univ., Houston, TX (United States)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China)
- Beijing Normal Univ., Beijing (China)
- Forschungszentrum Julich GmbH, Garching (Germany)
- Univ. Grenoble Alpes, Grenoble (France)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Chinese Academy of Sciences, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
- Rice Univ., Houston, TX (United States); Beijing Normal Univ., Beijing (China)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI Identifier:
- 1409258
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 96; Journal Issue: 18; 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
Song, Yu, Wang, Weiyi, Zhang, Chenglin, Gu, Yanhong, Lu, Xingye, Tan, Guotai, Su, Yixi, Bourdarot, Frédéric, Christianson, Andrew D., Li, Shiliang, and Dai, Pengcheng. Temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe0.9785Co0.0215As. United States: N. p., 2017.
Web. doi:10.1103/PhysRevB.96.184512.
Song, Yu, Wang, Weiyi, Zhang, Chenglin, Gu, Yanhong, Lu, Xingye, Tan, Guotai, Su, Yixi, Bourdarot, Frédéric, Christianson, Andrew D., Li, Shiliang, & Dai, Pengcheng. Temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe0.9785Co0.0215As. United States. https://doi.org/10.1103/PhysRevB.96.184512
Song, Yu, Wang, Weiyi, Zhang, Chenglin, Gu, Yanhong, Lu, Xingye, Tan, Guotai, Su, Yixi, Bourdarot, Frédéric, Christianson, Andrew D., Li, Shiliang, and Dai, Pengcheng. Tue .
"Temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe0.9785Co0.0215As". United States. https://doi.org/10.1103/PhysRevB.96.184512.
@article{osti_1409258,
title = {Temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe0.9785Co0.0215As},
author = {Song, Yu and Wang, Weiyi and Zhang, Chenglin and Gu, Yanhong and Lu, Xingye and Tan, Guotai and Su, Yixi and Bourdarot, Frédéric and Christianson, Andrew D. and Li, Shiliang and Dai, Pengcheng},
abstractNote = {We use unpolarized and polarized neutron scattering to study the temperature and polarization dependence of low-energy magnetic fluctuations in nearly optimally doped NaFe0.9785Co0.0215As, with coexisting superconductivity (Tc ≈ 19 K) and weak antiferromagnetic order (TN ≈ 30 K, ordered moment ≈ 0.02μB/Fe). A single spin resonance mode with intensity tracking the superconducting order parameter is observed, although energy of the mode only softens slightly upon approaching Tc. Polarized neutron scattering reveals that the single resonance is mostly isotropic in spin space, similar to overdoped NaFe0.935Co0.045As but different from optimal electron-, hole-, and isovalently doped BaFe2As2 compounds, all featuring an additional prominent anisotropic component. Spin anisotropy in NaFe0.9785Co0.0215As is instead present at energies below the resonance, which becomes partially gapped below Tc, similar to the situation in optimally doped YBa2Cu3O6.9. Here, our results indicate that anisotropic spin fluctuations in NaFe1–xCoxAs appear in the form of a resonance in the underdoped regime, become partially gapped below Tc near optimal doping, and disappear in overdoped compounds.},
doi = {10.1103/PhysRevB.96.184512},
url = {https://www.osti.gov/biblio/1409258},
journal = {Physical Review B},
issn = {2469-9950},
number = 18,
volume = 96,
place = {United States},
year = {2017},
month = {11}
}
Works referenced in this record:
Distinguishing and electron pairing symmetries by neutron spin resonance in superconducting NaFe Co As
journal, August 2013
- Zhang, Chenglin; Li, H. -F.; Song, Yu
- Physical Review B, Vol. 88, Issue 6
Weak-coupling superconductivity in a strongly correlated iron pnictide
journal, January 2016
- Charnukha, A.; Post, K. W.; Thirupathaiah, S.
- Scientific Reports, Vol. 6, Issue 1
Spin anisotropy due to spin-orbit coupling in optimally hole-doped
journal, December 2016
- Song, Yu; Man, Haoran; Zhang, Rui
- Physical Review B, Vol. 94, Issue 21
Resonance in the electron-doped high-transition-temperature superconductor Pr0.88LaCe0.12CuO4-δ
journal, July 2006
- Wilson, Stephen D.; Dai, Pengcheng; Li, Shiliang
- Nature, Vol. 442, Issue 7098
Itinerant Magnetic Excitations in Antiferromagnetic
journal, May 2009
- Diallo, S. O.; Antropov, V. P.; Perring, T. G.
- Physical Review Letters, Vol. 102, Issue 18
Prominent Role of Spin-Orbit Coupling in FeSe Revealed by Inelastic Neutron Scattering
journal, May 2017
- Ma, Mingwei; Bourges, Philippe; Sidis, Yvan
- Physical Review X, Vol. 7, Issue 2
Persistent high-energy spin excitations in iron-pnictide superconductors
journal, February 2013
- Zhou, Ke-Jin; Huang, Yao-Bo; Monney, Claude
- Nature Communications, Vol. 4, Issue 1
Measurement of a Double Neutron-Spin Resonance and an Anisotropic Energy Gap for Underdoped Superconducting Using Inelastic Neutron Scattering
journal, November 2013
- Zhang, Chenglin; Yu, Rong; Su, Yixi
- Physical Review Letters, Vol. 111, Issue 20
Spin waves and magnetic exchange interactions in CaFe2As2
journal, July 2009
- Zhao, Jun; Adroja, D. T.; Yao, Dao-Xin
- Nature Physics, Vol. 5, Issue 8
Nature of magnetic excitations in superconducting BaFe1.9Ni0.1As2
journal, March 2012
- Liu, Mengshu; Harriger, Leland W.; Luo, Huiqian
- Nature Physics, Vol. 8, Issue 5
Electron doping evolution of structural and antiferromagnetic phase transitions in iron pnictides
journal, July 2016
- Tan, Guotai; Song, Yu; Zhang, Chenglin
- Physical Review B, Vol. 94, Issue 1
Longitudinal Spin Excitations and Magnetic Anisotropy in Antiferromagnetically Ordered
journal, December 2013
- Wang, Chong; Zhang, Rui; Wang, Fa
- Physical Review X, Vol. 3, Issue 4
Splitting of Resonance Excitations in Nearly Optimally Doped : An Inelastic Neutron Scattering Study with Polarization Analysis
journal, March 2013
- Steffens, P.; Lee, C. H.; Qureshi, N.
- Physical Review Letters, Vol. 110, Issue 13
Anisotropy of incommensurate magnetic excitations in slightly overdoped probed by polarized inelastic neutron scattering experiments
journal, September 2014
- Qureshi, N.; Lee, C. H.; Kihou, K.
- Physical Review B, Vol. 90, Issue 10
Doping dependence of spin excitations and its correlations with high-temperature superconductivity in iron pnictides
journal, December 2013
- Wang, Meng; Zhang, Chenglin; Lu, Xingye
- Nature Communications, Vol. 4, Issue 1
Transition from Three-Dimensional Anisotropic Spin Excitations to Two-Dimensional Spin Excitations by Electron Doping the FeAs-Based Superconductor
journal, August 2009
- Harriger, Leland W.; Schneidewind, Astrid; Li, Shiliang
- Physical Review Letters, Vol. 103, Issue 8
Direct observation of spin–orbit coupling in iron-based superconductors
journal, December 2015
- Borisenko, S. V.; Evtushinsky, D. V.; Liu, Z. -H.
- Nature Physics, Vol. 12, Issue 4
Effect of Pnictogen Height on Spin Waves in Iron Pnictides
journal, May 2014
- Zhang, Chenglin; Harriger, Leland W.; Yin, Zhiping
- Physical Review Letters, Vol. 112, Issue 21
Spin Resonance in the -Wave Superconductor
journal, February 2008
- Stock, C.; Broholm, C.; Hudis, J.
- Physical Review Letters, Vol. 100, Issue 8
Symmetry of spin excitation spectra in the tetragonal paramagnetic and superconducting phases of 122-ferropnictides
journal, October 2010
- Park, J. T.; Inosov, D. S.; Yaresko, A.
- Physical Review B, Vol. 82, Issue 13
Electron doping evolution of the neutron spin resonance in
journal, May 2016
- Zhang, Chenglin; Lv, Weicheng; Tan, Guotai
- Physical Review B, Vol. 93, Issue 17
Divergent Nematic Susceptibility in an Iron Arsenide Superconductor
journal, August 2012
- Chu, J. -H.; Kuo, H. -H.; Analytis, J. G.
- Science, Vol. 337, Issue 6095
Strong-coupling superconductivity in NaFe Co As: Validity of Eliashberg theory
journal, April 2013
- Tan, Guotai; Zheng, Ping; Wang, Xiancheng
- Physical Review B, Vol. 87, Issue 14
Spin anisotropy of the magnetic excitations in the normal and superconducting states of optimally doped YBa Cu O studied by polarized neutron spectroscopy
journal, September 2011
- Headings, N. S.; Hayden, S. M.; Kulda, J.
- Physical Review B, Vol. 84, Issue 10
Crossover from spin waves to diffusive spin excitations in underdoped
journal, May 2014
- Tucker, G. S.; Fernandes, R. M.; Pratt, D. K.
- Physical Review B, Vol. 89, Issue 18
Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors
journal, May 2016
- Kuo, H. -H.; Chu, J. -H.; Palmstrom, J. C.
- Science, Vol. 352, Issue 6288
Normal-state spin dynamics and temperature-dependent spin-resonance energy in optimally doped BaFe1.85Co0.15As2
journal, December 2009
- Inosov, D. S.; Park, J. T.; Bourges, P.
- Nature Physics, Vol. 6, Issue 3
Spin Excitation Anisotropy as a Probe of Orbital Ordering in the Paramagnetic Tetragonal Phase of Superconducting
journal, September 2013
- Luo, Huiqian; Wang, Meng; Zhang, Chenglin
- Physical Review Letters, Vol. 111, Issue 10
Magnonlike Dispersion of Spin Resonance in Ni-doped
journal, April 2013
- Kim, M. G.; Tucker, G. S.; Pratt, D. K.
- Physical Review Letters, Vol. 110, Issue 17
Antiferromagnetic order and spin dynamics in iron-based superconductors
journal, August 2015
- Dai, Pengcheng
- Reviews of Modern Physics, Vol. 87, Issue 3
Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor
journal, October 2011
- Zhang, Chenglin; Wang, Meng; Luo, Huiqian
- Scientific Reports, Vol. 1, Issue 1
Polarized neutron scattering studies of magnetic excitations in electron-overdoped superconducting BaFe Ni As
journal, June 2012
- Liu, Mengshu; Lester, C.; Kulda, Jiri
- Physical Review B, Vol. 85, Issue 21
Unified Phase Diagram for Iron-Based Superconductors
journal, October 2017
- Gu, Yanhong; Liu, Zhaoyu; Xie, Tao
- Physical Review Letters, Vol. 119, Issue 15
Experimental elucidation of the origin of the ‘double spin resonances’ in
journal, May 2016
- Wang, Meng; Yi, M.; Sun, H. L.
- Physical Review B, Vol. 93, Issue 20
Itinerant spin excitations in SrFe As measured by inelastic neutron scattering
journal, June 2011
- Ewings, R. A.; Perring, T. G.; Gillett, J.
- Physical Review B, Vol. 83, Issue 21
Spin-Orbit Interactions and the Nematicity Observed in the Fe-Based Superconductors
journal, April 2015
- Johnson, P. D.; Yang, H. -B.; Rameau, J. D.
- Physical Review Letters, Vol. 114, Issue 16
Fermi surface nesting induced strong pairing in iron-based superconductors
journal, April 2009
- Terashima, K.; Sekiba, Y.; Bowen, J. H.
- Proceedings of the National Academy of Sciences, Vol. 106, Issue 18
Magnetic anisotropy in hole-doped superconducting Ba K Fe As probed by polarized inelastic neutron scattering
journal, February 2013
- Zhang, Chenglin; Liu, Mengshu; Su, Yixi
- Physical Review B, Vol. 87, Issue 8
Environmental stability and anisotropic resistivity of Co-doped Na Fe Co As
journal, October 2012
- Spyrison, N.; Tanatar, M. A.; Cho, Kyuil
- Physical Review B, Vol. 86, Issue 14
Temperature dependence of the resonance and low-energy spin excitations in superconducting FeTe Se
journal, February 2012
- Harriger, Leland W.; Lipscombe, O. J.; Zhang, Chenglin
- Physical Review B, Vol. 85, Issue 5
In-plane spin excitation anisotropy in the paramagnetic state of NaFeAs
journal, October 2013
- Song, Yu; Regnault, Louis-Pierre; Zhang, Chenglin
- Physical Review B, Vol. 88, Issue 13
Robust upward dispersion of the neutron spin resonance in the heavy fermion superconductor Ce1−xYbxCoIn5
journal, September 2016
- Song, Yu; Van Dyke, John; Lum, I. K.
- Nature Communications, Vol. 7, Issue 1
Anisotropic resonance modes emerging in an antiferromagnetic superconducting state
journal, September 2017
- Waßer, F.; Lee, C. H.; Kihou, K.
- Scientific Reports, Vol. 7, Issue 1
Spin excitation anisotropy in the paramagnetic tetragonal phase of
journal, July 2017
- Li, Yu; Wang, Weiyi; Song, Yu
- Physical Review B, Vol. 96, Issue 2
Structural and magnetic phase transitions in
journal, July 2009
- Li, Shiliang; de la Cruz, Clarina; Huang, Q.
- Physical Review B, Vol. 80, Issue 2
Electron doping evolution of the magnetic excitations in
journal, June 2016
- Carr, Scott V.; Zhang, Chenglin; Song, Yu
- Physical Review B, Vol. 93, Issue 21
Local magnetic anisotropy in BaFe As : A polarized inelastic neutron scattering study
journal, August 2012
- Qureshi, N.; Steffens, P.; Wurmehl, S.
- Physical Review B, Vol. 86, Issue 6
Suppression of spin-exciton state in hole overdoped iron-based superconductors
journal, March 2016
- Lee, C. H.; Kihou, K.; Park, J. T.
- Scientific Reports, Vol. 6, Issue 1
Transition from Sign-Reversed to Sign-Preserved Cooper-Pairing Symmetry in Sulfur-Doped Iron Selenide Superconductors
journal, May 2016
- Wang, Qisi; Park, J. T.; Feng, Yu
- Physical Review Letters, Vol. 116, Issue 19
Anisotropic neutron spin resonance in underdoped superconducting
journal, October 2014
- Zhang, Chenglin; Song, Yu; Regnault, L. -P.
- Physical Review B, Vol. 90, Issue 14
Crossover from weak to strong pairing in unconventional superconductors
journal, June 2011
- Inosov, D. S.; Park, J. T.; Charnukha, A.
- Physical Review B, Vol. 83, Issue 21
Nematic spin fluid in the tetragonal phase of BaFe As
journal, August 2011
- Harriger, L. W.; Luo, H. Q.; Liu, M. S.
- Physical Review B, Vol. 84, Issue 5
A universal relationship between magnetic resonance and superconducting gap in unconventional superconductors
journal, October 2009
- Yu, G.; Li, Y.; Motoyama, E. M.
- Nature Physics, Vol. 5, Issue 12
Polarized and unpolarized neutron-scattering study of the dynamical spin susceptibility of Y
journal, September 1996
- Fong, H. F.; Keimer, B.; Reznik, D.
- Physical Review B, Vol. 54, Issue 9
Spin fluctuations in iron pnictides and chalcogenides: From antiferromagnetism to superconductivity
journal, January 2016
- Inosov, Dmytro S.
- Comptes Rendus Physique, Vol. 17, Issue 1-2
Nematic Quantum Critical Fluctuations in
journal, October 2016
- Liu, Zhaoyu; Gu, Yanhong; Zhang, Wei
- Physical Review Letters, Vol. 117, Issue 15
Electron-doping evolution of the low-energy spin excitations in the iron arsenide superconductor
journal, May 2010
- Wang, Miaoyin; Luo, Huiqian; Zhao, Jun
- Physical Review B, Vol. 81, Issue 17
A common thread: The pairing interaction for unconventional superconductors
journal, October 2012
- Scalapino, D. J.
- Reviews of Modern Physics, Vol. 84, Issue 4