Unequivocal Identification of Spin-Triplet and Spin-Singlet Superconductors with Upper Critical Field and Flux Quantization
C. C. Chiang, H. C. Lee, S. C. Lin, D. Qu, M. W. Chu, C. D. Chen, C. L. Chien, S. Y. Huang
DOI 10.1103/PhysRevLett.131.236003 · Physical Review Letters
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Abstract
Spin-triplet superconductors play central roles in Majorana physics and quantum computing but are difficult to identify. We show the methods of kink-point upper critical field and flux quantization in superconducting rings can unequivocally identify spin-singlet, spin-triplet in centrosymmetric superconductors, and singlet-triplet admixture in noncentrosymmetric superconductors, as realized in γ−BiPd, β−Bi2Pd, and α−BiPd, respectively. Our findings are essential for identifying triplet superconductors and exploring their quantum properties.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| α-BiPd Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.7 | Pressure not reported | onset |
| β-Bi2Pd Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.6 | Pressure not reported | onset |
| γ-BiPd Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.3 | Pressure not reported | onset |
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