Pairing symmetry in monolayer of orthorhombic CoSb

Abstract

Ferromagnetism and superconductivity are generally considered to be antagonistic phenomena in condensed matter physics. Here, we theoretically study the interplay between the ferromagnetic and superconducting orders in a recent discovered monolayered CoSb superconductor with an orthorhombic symmetry and net magnetization, and demonstrate the pairing symmetry of CoSb as a candidate of non-unitary superconductor with time-reversal symmetry breaking. By performing the group theory analysis and the first-principles calculations, the superconducting order parameter is suggested to be a triplet pairing with the irreducible representation of ${}^3{B}_{2u}$, which displays intriguing nodal points and non-zero periodic modulation of Cooper pair spin polarization on the Fermi surface topologies. These findings not only provide a significant theoretical insight into the coexistence of superconductivity and ferromagnetism, but also reveal the exotic spin polarized Cooper pairing driven by ferromagnetic spin fluctuations in a triplet superconductor.

arXiv comment10 pages, 6 figures, 2 Tables

References in corpus (44)

• Topological insulators and superconductors
• Fault-tolerant quantum computation by anyons
• Non-Abelian Anyons and Topological Quantum Computation
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Unpaired Majorana fermions in quantum wires
• 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
• New directions in the pursuit of Majorana fermions in solid state systems
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• A generic new platform for topological quantum computation using semiconductor heterostructures
• Non-abelian statistics of half-quantum vortices in p-wave superconductors
• Search for Majorana fermions in superconductors
• Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
• Topological superconductors: a review
• Majorana bound states in a coupled quantum-dot hybrid-nanowire system
• Majorana Fermion Induced Resonant Andreev Reflection
• Colloquium: Majorana Fermions in nuclear, particle and solid-state physics
• Evidence for Majorana bound state in an iron-based superconductor
• Observation of Majorana fermions with spin selective Andreev reflection in the vortex of topological superconductor
• Majorana mode in vortex core of Bi2Te3/NbSe2 topological insulator-superconductor heterostructure
• Quantized Majorana conductance
• Electronic Structure and Doping in BaFe${}_2$As${}_2$ and LiFeAs: Density Functional Calculations
• The Order Parameter for the Superconducting Phases of UPt${}_3$
• Chiral Superconductors
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• Topological superconductivity on the surface of Fe-based superconductors
• Observation of a Robust Zero-energy Bound State in Iron-based Superconductor Fe(Te,Se)
• Non-unitary triplet pairing in the centrosymmetric superconductor LaNiGa${}_2$
• Atomic line defects and zero-energy end states in monolayer Fe(Te,Se) high-temperature superconductors
• Superconducting states in ferromagnetic metals
• Relativistic analysis of the pairing symmetry of the noncentrosymmetric superconductor LaNiC${}_2$
• Fractional quantum Hall effect and nonabelian statistics
• Pressure induced topological quantum phase transition in Sb_2Se_3
• Three-Dimensional Majorana Fermions in Chiral Superconductors
• Quantitative Theory of Triplet Pairing in the Unconventional Superconductor LaNiGa${}_2$
• p-wave superconductivity near a transverse saturation field
• Zero-energy bound states in the high-temperature superconductors at the two-dimensional limit
• Order parameter symmetry in ferromagnetic superconductors
• Magnetism and Superconductivity in Ferromagnetic Heavy Fermion System UCoGe under In-plane Magnetic Fields
• Exotic Fractional Topological States in Two-Dimensional Organometallic Material
• Pairing Symmetry in Iron-Pnictide Superconductor KFe${}_2$As${}_2$
• Universal critical behavior in the ferromagnetic superconductor Eu(Fe${}_{0.75}$Ru${}_{0.25}$)${}_2$As${}_2$
• Evidence the ferromagnetic order on CoSb layer of LaCoSb${}_2$

Cited by in corpus (3)

• Z${}_2$ nontrivial topology of rare-earth binary oxide superconductor
• Electronic structure and signature of Tomonaga-Luttinger liquid state in epitaxial CoSb${}_{1-x}$ nanoribbons
• Spontaneous magnetization in unitary superconductors with time reversal symmetry breaking