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Journal Articles Physical Review B: Condensed Matter and Materials Physics (1998-2015) Year : 2016

Characterizing p -wave superconductivity using the spin structure of Shiba states

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Abstract

Cooper pairs in two-dimensional unconventional superconductors with broken inversion symmetry are in a mixture of an even-parity spin-singlet pairing state with an odd-parity spin-triplet pairing state. We study the magnetic properties of the impurity bound states in such superconductors and find striking signatures in their spin polarization which allow to unambiguously discriminate a non-topological superconducting phase from a topological one. Moreover, we show how these properties, which could be measured using spin-polarized scanning tunneling microscopy (STM), also enable to determine the direction of the spin-triplet pairing vector of the host material and thus to distinguish between different types of unconventional pairing.

Dates and versions

cea-01495253 , version 1 (24-03-2017)

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V. Kaladzhyan, C. Bena, P. Simon. Characterizing p -wave superconductivity using the spin structure of Shiba states. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2016, 93 (21), ⟨10.1103/PhysRevB.93.214514⟩. ⟨cea-01495253⟩
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