2000/10/31 by K. Sengupta, Igor Žutić, Igor Zutic +4 · 3 citations
Materials Science · Mathematics · Physics and Astronomy · #Bound state #Condensed matter physics #Mathematics #Organic and Molecular Conductors Research #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Spins #Superconductivity #Symmetry (geometry) #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.63.144531
published as Phys. Rev. B 63, 144531 (2001) · 6 pages, 4 figures. V.2: New section on spin response is added and references are updated. V.3: Final version accepted to PRB. Typos are corrected and important note is added in proofs
arxiv created 2001/03/01 · openalex publication_date 2001/03/23 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The singlets s\ensuremath- and d\ensuremath-, and triplet p-wave pairing symmetries in quasi-one-dimensional organic superconductors can be experimentally discriminated by probing the Andreev bound states at the sample edges. These states have the energy in the middle of the superconducting gap and manifest themselves as a zero-bias peak in tunneling conductance into the corresponding edge. Their existence is related to the sign change of the pairing potential around the Fermi surface. We present an exact self-consistent solution of the edge problem showing the presence of the midgap states for px-wave superconductivity. The spins of the edge state respond paramagnetically to a magnetic field parallel to the vector d that characterizes triplet pairing.