Preferred spin excitations in the bilayer iron-based superconductor CaKðFe0.96Ni0.04Þ4As4 with spin-vortex crystal order

Simple item page
dc.contributor.authorLiu, Cen_AU
dc.contributor.authorBourges, Pen_AU
dc.contributor.authorSidis, Yen_AU
dc.contributor.authorHe, GHen_AU
dc.contributor.authorBourdarot, Fen_AU
dc.contributor.authorDanilkin, SAen_AU
dc.contributor.authorGhosh, Hen_AU
dc.contributor.authorGhosh, Sen_AU
dc.contributor.authorMa, XYen_AU
dc.contributor.authorLi, SLen_AU
dc.contributor.authorLi, Yen_AU
dc.contributor.authorLuo, HQen_AU
dc.contributor.authorXie, Ten_AU
dc.date.accessioned2024-01-18T01:40:36Zen_AU
dc.date.available2024-01-18T01:40:36Zen_AU
dc.date.issued2022-03-31en_AU
dc.date.statistics2022-04-22en_AU
dc.descriptionAttached copy comes from https://arxiv.org/abs/2202.11933 which is CC-BY licence.en_AU
dc.description.abstractSpin-orbit coupling (SOC) is a key to understand the magnetically driven superconductivity in iron-based superconductors, where both local and itinerant electrons are present and the orbital angular momentum is not completely quenched. Here, we report a neutron scattering study on the bilayer compound CaK(Fe0.96Ni0.04)4As4 with superconductivity coexisting with a noncollinear spin-vortex crystal magnetic order that preserves the tetragonal symmetry of the Fe-Fe plane. In the superconducting state, two spin resonance modes with odd and even L symmetries due to the bilayer coupling are found similar to the undoped compound CaKFe4As4 but at lower energies. Polarization analysis reveals that the odd mode is c-axis polarized, and the low-energy spin anisotropy can persist to the paramagnetic phase at high temperature, which closely resembles other systems with in-plane collinear and c-axis biaxial magnetic orders. These results provide the missing piece of the puzzle on the SOC effect in iron-pnictide superconductors, and also establish a common picture of c-axis preferred magnetic excitations below Tc regardless of the details of magnetic pattern or lattice symmetry. © 2022 American Physical Societyen_AU
dc.identifier.articlenumber137003en_AU
dc.identifier.citationLiu, C., Bourges, P., Sidis, Y., Xie, T., He, G., Bourdarot, F., Danilkin, S., Ghosh, H., Ghosh, S., Ma, X., Li, S., Li, Y., & Luo, H. (2022). Preferred spin excitations in the bilayer iron-based superconductor CaKðFe0.96Ni0.04Þ4As4 with spin-vortex crystal order. Physical Review Letters, 128(13), 137003. doi:10.1103/PhysRevLett.128.137003en_AU
dc.identifier.issn1079-7114en_AU
dc.identifier.issue13en_AU
dc.identifier.journaltitlePhysical Review Lettersen_AU
dc.identifier.urihttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.128.137003en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15361en_AU
dc.identifier.volume128en_AU
dc.language.isoenen_AU
dc.publisherAmerican Physical Societyen_AU
dc.relation.urihttps://doi.org/10.1103/PhysRevLett.128.137003en_AU
dc.subjectSpinen_AU
dc.subjectExcitationen_AU
dc.subjectSuperconductorsen_AU
dc.subjectCrystalsen_AU
dc.subjectIronen_AU
dc.subjectSymmetryen_AU
dc.subjectElectronsen_AU
dc.subjectScatteringen_AU
dc.subjectPolarizationen_AU
dc.subjectTemperature range 0400-1000 Ken_AU
dc.titlePreferred spin excitations in the bilayer iron-based superconductor CaKðFe0.96Ni0.04Þ4As4 with spin-vortex crystal orderen_AU
dc.typeJournal Articleen_AU
Files
Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
2202.11933.pdf
Size:
19.39 MB
Format:
Adobe Portable Document Format
Description:
Download
Thumbnail Image
Name:
CaKFeNiAs_Supplementary.pdf
Size:
4.89 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles