2015/12/31 by Vardan Kaladzhyan, Cristina Bena, Pascal Simon
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Cooper pair #Excited state #Pairing #Parity (physics) #Physics #Physics of Superconductivity and Magnetism #Point reflection #Quantum mechanics #Singlet state #Spin (aerodynamics) #Superconductivity #Topological Materials and Phenomena #Triplet state #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.93.214514
published as Phys. Rev. B 93, 214514 (2016) · 11 pages + 9 pages of supplementary information, 9 figures + 8 figures (SI)
arxiv created 2016/06/03 · openalex publication_date 2016/06/22 · openalex created_date 2016/06/24 · arxiv updated 2016/06/29 · openalex updated_date 2026/08/05
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 one to unambiguously discriminate a nontopological 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 one to determine the direction of the spin-triplet pairing vector of the host material and thus to distinguish between different types of unconventional pairing.