Nonhelical spin texture in the normal states of the centrosymmetric superconductor β−PdBi2
T. Xu, B. T. Wang, M. Wang, Q. Jiang, X. P. Shen, B. Gao, M. Ye, S. Qiao
DOI 10.1103/PhysRevB.100.161109 · Physical Review B
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Abstract
A nonhelical spin texture was observed in the centrosymmetric superconductor β−PdBi2 using an imaging-type spin- and angle-resolved spectroscopy. The observed surface and bulk states near the Fermi energy are found to be spin polarized with nonhelical textures. First-principles calculations and effective models show that the inter- and intralayer hoppings account for the complex spin texture and thus play a significant role in the spatial distribution of the layer-locked spin states. Our work not only provides insights into the local spin states in inversion-symmetric systems but also paves the way to the identification of the nature of superconducting pairing in the presence of a complex spin texture in β−PdBi2 and the related centrosymmetric superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| β-PdBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.3 | Pressure not reported | unknown |
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