Title: Interface currents and magnetization in singlet-triplet superconducting heterostructures: Role of chiral and helical domains,
Abstract: Chiral and helical domain walls are generic defects of topological
spin-triplet superconductors. We study theoretically the magnetic and transport
properties of superconducting singlet-triplet-singlet heterostructure as a
function of the phase difference between the singlet leads in the presence of
chiral and helical domains inside the spin-triplet region. The local inversion
symmetry breaking at the singlet-triplet interface allows the emergence of a
static phase-controlled magnetization, and generally yields both spin and
charge currents flowing along the edges. The parity of the domain wall number
affects the relative orientation of the interface moments and currents, while
in some cases the domain walls themselves contribute to spin and charge
transport. We demonstrate that singlet-triplet heterostructures are a generic
prototype to generate and control non-dissipative spin and charge effects,
putting them in a broader class of systems exhibiting spin-Hall, anomalous Hall
effects and similar phenomena. Features of the electron transport and magnetic
effects at the interfaces can be employed to assess the presence of domains in
chiral/helical superconductors.