• Corpus ID: 238583078

Dispersionless orbital excitations in (Li,Fe)OHFeSe superconductors

@inproceedings{Xiao2021DispersionlessOE,
  title={Dispersionless orbital excitations in (Li,Fe)OHFeSe superconductors},
  author={Qian Xiao and Wenliang Zhang and Teguh C. Asmara and Dong Li and Qizhi Li and Shilong Zhang and Yi Tseng and Xiaoli Dong and Yao Wang and Cheng-Chien Chen and Thorsten Schmitt and Yingying Peng},
  year={2021}
}
Qian Xiao, ∗ Wenliang Zhang, ∗ Teguh Citra Asmara, ∗ Dong Li, 4, ∗ Qizhi Li, Shilong Zhang, Yi Tseng, Xiaoli Dong, 4, 5 Yao Wang, Cheng-Chien Chen, Thorsten Schmitt, † and Yingying Peng ‡ International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China Photon Science Division, Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of… 

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SHOWING 1-10 OF 75 REFERENCES
Coexistence of superconductivity and antiferromagnetism in (Li0.8Fe0.2)OHFeSe.
TLDR
The synthesis of an air-stable material, (Li0.8Fe0.2)OHFeSe, which remains superconducting at temperatures up to ~40 K, by means of a novel hydrothermal method and antiferromagnetic order is shown to coexist with superconductivity.
Electronic Phase Separation in Iron Selenide (Li,Fe)OHFeSe Superconductor System
The phenomenon of phase separation into antiferromagnetic (AFM) and superconducting (SC) or normal-state regions has great implication for the origin of high-temperature (high-T c) superconductivity.
Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe
The electronic structure and magnetism of a new magnetic intercalation compound (Li0.8Fe0.2)OHFeSe are investigated theoretically. The electronic structure calculations predict that the Fe in the
Superconductivity in the PbO-type structure α-FeSe
  • F. Hsu, J. Luo, +8 authors Maw-Kuen Wu
  • Materials Science, Medicine
    Proceedings of the National Academy of Sciences
  • 2008
TLDR
The observation of superconductivity with zero-resistance transition temperature at 8 K in the PbO-type α-FeSe compound is reported, indicating that this compound has the same, perhaps simpler, planar crystal sublattice as the layered oxypnictides.
Matrix-assisted fabrication and exotic charge mobility of (Li,Fe)OHFeSe superconductor films
Superconducting (Li1-xFex)OHFe1-ySe films are attractive for both the basic research and practical application. However, the conventional vapor deposition techniques are not applicable in
Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3
TLDR
High-resolution angle-resolved photoemission spectroscopy results reveal an unexpected characteristic of the single-unit-cell FeSe/SrTiO3 system: shake-off bands suggesting the presence of bosonic modes, most probably oxygen optical phonons in SrTiO2, which couple to the FeSe electrons with only a small momentum transfer.
Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
TLDR
Inelastic neutron scattering observations of a magnetic resonance below Tc in Ba0.6K0.4Fe2As2 are reported, a phase-sensitive measurement demonstrating that the superconducting energy gap has unconventional symmetry in the iron arsenide superconductors.
Superconducting (Li, Fe)OHFeSe film of high quality and high critical parameters
The superconducting film of (Li1-xFex)OHFeSe is reported for the first time. The thin film exhibits a small in-plane crystal mosaic of 0.22 deg, in terms of the FWHM (full-width-at-half-maximum) of
Discovery of orbital-selective Cooper pairing in FeSe
TLDR
It is shown that both gaps are extremely anisotropic but nodeless and that they exhibit gap maxima oriented orthogonally in momentum space and it is demonstrated that these gaps have opposite sign with respect to each other.
Observation of universal strong orbital-dependent correlation effects in iron chalcogenides
TLDR
This work uses angle-resolved photoemission spectroscopy to measure three representative iron chalcogenides and shows that these superconductors are all strongly correlated, with an orbital-selective strong renormalization in the dxy bands despite having drastically different Fermi surface topologies.
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