Site-selective NMR for odd-frequency Cooper pairs around vortex in chiral p-wave superconductors

Kenta K. Tanaka; Masanori Ichioka; Seiichiro Onari

doi:10.1103/PhysRevB.93.094507

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Site-selective NMR for odd-frequency Cooper pairs around vortex in chiral p-wave superconductors

Kenta K. Tanaka, Masanori Ichioka, Seiichiro Onari

DOI 10.1103/PhysRevB.93.094507 · Physical Review B

T1

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Abstract

In order to identify the pairing symmetry with chirality, we study site-selective NMR in chiral p-wave superconductors. We calculate local nuclear relaxation rate T1−1 in the vortex lattice state by Eilenberger theory, including the applied magnetic field dependence. We find that T1−1 in the NMR resonance line shape is different between two chiral states p±(=px±ipy), depending on whether the chirality is parallel or antiparallel to the vorticity. Anomalous suppression of T1−1 occurs around the vortex core in the chiral p− wave due to the negative coherence term coming from the odd-frequency s-wave Cooper pair induced around the vortex with Majorana state.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown