Hydrogen Doping Induced $p_x\pm i{p}_y$ Triplet Superconductivity in Quasi-One-Dimensional K${}_2$Cr${}_3$As${}_3$

Abstract

Quasi-one-dimensional (Q1D) Cr-based pnictide K${}_2$Cr${}_3$As${}_3$ has aroused great research interest due to its possible triplet superconducting pairing symmetry. Recent experiments have shown that incorporating hydrogen atoms into K${}_2$Cr${}_3$As${}_3$ would significantly change its electronic and magnetic properties. Hence, it's necessary to investigate the impact of hydrogen doping in superconducting pairing symmetry of this material. Employing the hydrogen as an non-trivial electron-doping, our calculates show that, different from the $p_z$-wave obtained without hydrogen, the system exhibits $p_x\pm i{p}_y$ pairing superconductivity under specific hydrogen doping. Specifically, we adopt the random-phase-approximation approach based on a six-band tight-binding model equipped with multi-orbital Hubbard interactions to study the hydrogen-doping dependence of the pairing symmetry and superconducting $T_c$. Under the rigid-band approximation, our pairing phase diagram shows the spin-triplet pairing states is dominated through out the hydrogen-doping regime $x\in (0,0.7)$. Particularly, the $T_c\sim x$ curve shows a peak at the 3D-quasi-1D Lifshitz transition point, and the pairing symmetry around this doping level is $p_x\pm i{p}_y$. The physical origin of this pairing symmetry is that the density of states is mainly concentrated at $k_x(k_y)$ with large momentum. Due to the three-dimensional character of the real material, this $p_x\pm i{p}_y$-wave superconducting state possesses point gap nodes. We further provide experiment prediction to identify this triplet $p_x\pm i{p}_y$-wave superconductivity.

arXiv comment9 pages,9 figures. arXiv admin note: substantial text overlap with arXiv:2111.14367

References in corpus (51)

• Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO${}_{1-x}$F${}_x$}
• A Common Thread: the pairing interaction for the unconventional superconductors
• Near-degeneracy of several pairing channels in multiorbital models for the Fe-pnictides
• Chiral SDW and d + id superconductivity in the magic-angle twisted bilayer-graphene
• Superconductivity in the repulsive Hubbard model: an asymptotically exact weak-coupling solution
• Superconductivity in quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$ with significant electron correlations
• d+id' Chiral Superconductivity in Bilayer Silicene
• d-wave pairing from spin fluctuations in the KxFe{2-y}Se2 superconductors
• Strong-coupling theory of superconductivity in a degenerate Hubbard model
• Unconventional superconductivity in quasi-one-dimensional Rb${}_2$Cr${}_3$As${}_3$
• Superconductivity in quasi-one-dimensional Cs2Cr3As3 with large interchain distance
• Local antiferromagnetic exchange and collaborative Fermi surface as key ingredients of high temperature superconductors
• Pairing symmetry in a two-orbital Hubbard model on a square lattice
• NMR Investigation of the Quasi One-dimensional Superconductor K${}_2$Cr${}_3$As${}_3$
• Searching for triplet superconductivity in the Quasi-One-Dimensional K2Cr3As3
• Origin of the Weak Pseudo-gap Behaviors in Na_{0.35}CoO_2: Absence of Small Hole Pockets
• Electronic structure of quasi-one-dimensional superconductor K${}_2$Cr${}_3$As${}_3$ from first-principles calculations
• Triplet $p_z$-wave pairing in quasi one dimensional A${}_2$Cr${}_3$As${}_3$ superconductors
• Topological Odd-Parity Superconductivity at Type-II 2D Van Hove Singularities
• Anisotropic $H_{c2}$, thermodynamic and transport measurements, and pressure dependence of $T_c$ in K${}_2$Cr${}_3$As${}_3$ single crystals
• Spin-Triplet Superconductivity in K2Cr3As3
• Ion-exchange synthesis and superconductivity at 8.6 K of Na2Cr3As3 with quasi-one-dimensional crystal structure
• Possible Triplet $p+ip$ Superconductivity in Graphene at Low Filling
• Superconductivity at 5 K in quasi-one-dimensional Cr-based KCr3As3 single crystals
• Ferromagnetic Spin Fluctuation and Unconventional Superconductivity in Rb${}_2$Cr${}_3$As${}_3$ revealed by ${}^{75}$As NMR and NQR
• Magnetism in Quasi-One-Dimensional A${}_2$Cr${}_3$As${}_3$ (A=K,Rb) superconductors
• Theory for superconductivity in alkali chromium arsenides A2Cr3As3 (A=K,Rb,Cs)
• Formation of Molecular-Orbital Bands in a Twisted Hubbard Tube: Implications for Unconventional Superconductivity in K2Cr3As3
• Tuning the distance to a possible ferromagnetic quantum critical point in A2Cr3As3
• Band-structure effects on superconductivity in Hubbard models
• Superconductivity at 10.4 K in a novel quasi-one-dimensional ternary molybdenum pnictide K2Mo3As3
• Nodal superconducting gap structure in the quasi-one-dimensional Cs${}_2$Cr${}_3$As${}_3$ investigated using $\mu$SR measurements
• Temperature and Angular Dependence of the Upper Critical Field in K${}_2$Cr${}_3$As${}_3$
• Strong-coupling electron-phonon superconductivity in noncentrosymmetric quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$
• Tunable electronic anisotropy in single-crystal A2Cr3As3 (A = K, Rb) quasi-one-dimensional superconductors
• Topological p+ip superconductivity in doped graphene-like single-sheet materials BC${}_3$
• Coupling of structure to magnetic and superconducting orders in quasi-one-dimensional ${\text{K}}_2{\text{Cr}}_3{\text{As}}_3$
• Peculiar properties of Cr${}_3$As${}_3$-chain-based superconductors
• Revisitation of superconductivity in K${}_2$Cr${}_3$As${}_3$ based on the six-band model
• Instability of three-band Tomonaga-Luttinger liquid: renormalization group analysis and possible application to K2Cr3As3
• Penetration depth measurements of K2Cr3As3 and Rb2Cr3As3
• Effect of impurity scattering on superconductivity in K${}_2$Cr${}_3$As${}_3$
• Evidence for spin-triplet odd-parity superconductivity close to type-II van Hove singularities
• High-Angular-Momentum Topological Superconductivity in the Largest-Angle Twisted Homo-bilayer Systems
• Tuning from Frustrated Magnetism to Superconductivity in Quasi-One-Dimensional KCr${}_3$As${}_3$ Through Hydrogen Doping
• Lifshitz Transition and Nontrivial H-Doping Effect in Cr-based Superconductor KCr${}_3$As${}_3$H${}_x$
• Itinerant Ferromagnetism and $p+i{p}^{\prime }$ Superconductivity in Doped Bilayer Silicene
• Singlet $s^{\pm }$-wave pairing in quasi-one-dimensional ACr${}_3$As${}_3$ (A=K, Rb, Cs) superconductors
• $d+id$ chiral superconductivity in a triangular lattice from trigonal bipyramidal complexes
• Lifshitz transition enhanced triplet $p_z$-wave superconductivity in hydrogen doped KCr${}_3$As${}_3$
• High temperature spin-triplet topological superconductivity in K2Cr3As3