NMR diagnosis of pseudo-scalar superconductivity in 3D Dirac materials
classification
❄️ cond-mat.supr-con
keywords
pseudo-scalarbreakingdiracmaterialssuperconductingsuperconductivityalternativeandreev
read the original abstract
Recently observed 4{\pi} periodic Andreev bound states in three dimensional Dirac materials are attributed to convnetional superconducting pairing. Our alternative explanation in terms of a novel form of parity breaking pseudo-scalar superconducting order can be sharply diagnosed by nuclear magnetic resonance (NMR) relaxation rate. The left-right symmetry breaking of the pseudo-scalar superconductivity can be directly probed as an anti-peak structure below TC in sharp contrast to the conventional Hebel-Slichter peak.
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