Topological phase transitions in small mesoscopic chiral p-wave superconductors
arXiv:1710.08440 · doi:10.1103/PhysRevB.96.224512
Abstract
Spin-triplet chiral p-wave superconductivity is typically described by a two-component order parameter, and as such is prone to unique emergent effects when compared to the standard single-component superconductors. Here we present the equilibrium phase diagram for small mesoscopic chiral p-wave superconducting disks in the presence of magnetic field, obtained by solving the microscopic Bogoliubov-de Gennes equations self-consistently. In the ultra-small limit, the cylindrically-symmetric giant-vortex states are the ground state of the system. However, with increasing sample size, the cylindrical symmetry is broken as the two components of the order parameter segregate into domains, and the number of fragmented domain walls between them characterizes the resulting states. Such domain walls are topological defects unique for the p-wave order, and constitute a dominant phase in the mesoscopic regime. Moreover, we find two possible types of domain walls, identified by their chirality-dependent interaction with the edge states.
References in corpus (43)
- Topological insulators and superconductors
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
- A generic new platform for topological quantum computation using semiconductor heterostructures
- Non-abelian statistics of half-quantum vortices in p-wave superconductors
- Vortices with fractional flux in two-gap superconductors and in extended Faddeev model
- Vortex phase diagram for mesoscopic superconducting disks
- Chiral Superconductors
- Chiral P-Wave Order in Sr_2RuO_4
- Observation of half-height magnetization steps in Sr2RuO4
- Quasiparticle States near the Surface and the Domain Wall in a p_x\pm i p_y-Wave Superconductor
- Hidden symmetry and knot solitons in a charged two-condensate Bose system
- Experimental Evidence for Giant Vortex States in a Mesoscopic Superconducting Disk
- Two-dimensional topological superconductivity in Pb/Co/Si(111)
- Spontaneous Hall effect in chiral p-wave superconductor
- Observation of half-quantum vortices in topological superfluid 3He
- Topological solitons in three-band superconductors with broken time reversal symmetry
- p-wave triggered superconductivity in single layer graphene on an electron-doped oxide superconductor
- Geometrical destruction of the global phase coherence in ultrathin superconducting cylinders
- Two-band superconductors: Hidden criticality deep in the superconducting state
- Massless Leggett Mode in Three-band Superconductors with Time-Reversal-Symmetry Breaking
- Vortices in chiral, spin-triplet superconductors and superfluids
- Emergent phenomena in multicomponent superconductivity: an introduction to the focus issue
- Current inversion at the edges of a chiral -wave superconductor
- Skyrmionic state and stable half-quantum vortices in chiral p-wave superconductors
- Vortex Charging Effect in a Chiral -Wave Superconductor
- Thermodynamically stable noncomposite vortices in mesoscopic two-gap superconductors
- Ground state, collective mode, phase soliton and vortex in multiband superconductors
- Spontaneous edge current in a small chiral superconductor with a rough surface
- Phase solitons in multi-band superconductors with and without time-reversal symmetry
- Properties of skyrmions and multi-quanta vortices in chiral -wave superconductors
- Domain wall in a chiral p-wave superconductor: a pathway for electrical current
- Unconventional vortex states in nanoscale superconductors due to shape-induced resonances in the inhomogeneous Cooper-pair condensate
- Confinement effects on intermediate state flux patterns in mesoscopic type-I superconductors
- Vortical versus skyrmionic states in mesoscopic \emph{p}-wave superconductors
- Electronic properties of emergent topological defects in chiral -wave superconductivity
- Vortex states in mesoscopic three-band superconductors
- Vortex states in nanoscale superconducting squares: the influence of quantum confinement
- Chirality sensitive effect on surface states in chiral p-wave superconductors
- Domain walls in a chiral d-wave superconductor on the honeycomb lattice
- Field-induced p-wave Superconductivity in Mesoscopic Systems
- Phase diagrams of a p-Wave superconductor inside a mesoscopic disc-shaped sample