Two-dimensional p-wave superconducting states with magnetic moments on a conventional s-wave superconductor
Sho Nakosai, Yukio Tanaka, Naoto Nagaosa
DOI 10.1103/PhysRevB.88.180503 · Physical Review B
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Abstract
Unconventional superconductivity induced by the magnetic moments in a conventional spin-singlet s-wave superconductor is theoretically studied. By choosing the spin directions of these moments, one can design spinless pairing states appearing within the s-wave superconducting energy gap. It is found that the helix spins produce a px+py-wave state while the skyrmion crystal configuration a px+ipy-wave-like state. Nodes in the energy gap and the zero-energy flat band of Majorana edge states exist in the former case, while the chiral Majorana channels along edges of the sample and the zero-energy Majorana bound state at the core of the vortex appear in the latter case.
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