# Revisitation of superconductivity in K$_2$Cr$_3$As$_3$ based on the six-band model

@article{Zhang2015RevisitationOS, title={Revisitation of superconductivity in K\$\_2\$Cr\$\_3\$As\$\_3\$ based on the six-band model}, author={Li-Da Zhang and Xianxin Wu and Heng Fan and Fan Yang and Jiangping Hu}, journal={arXiv: Superconductivity}, year={2015} }

We investigate the pairing symmetry of the newly synthesized quasi-one-dimension K$_2$Cr$_3$As$_3$ superconductor based on the six-band model. We adopt standard random-phase-approximation to study the Hubbard-Hund model of the system. Our results confirm the conclusions obtained from our previous three-band model: the triplet $p_z$ and $f_{y^3-3x^2y}$ wave pairings serve as the leading pairing symmetries in the weak and strong Hund's rule coupling regimes, respectively. For physically realistic…

## 15 Citations

Singlet
s±
-wave pairing in quasi-one-dimensional
ACr3As3(A=K,Rb,Cs)
superconductors

- PhysicsPhysical Review B
- 2019

The recent discovery of quasi-one-dimensional Chromium-based superconductivity has generated much excitement. We study in this work the superconducting instabilities of a representative compound, the…

Lifshitz transition and nontrivial H-doping effect in the Cr-based superconductor
KCr3As3Hx

- Physics, Materials SciencePhysical Review B
- 2019

We report the first-principles study on the H-intercalated Cr-based superconductor KCr$_3$As$_3$H$_x$. Our results show a paramagnetic ground state for KCr$_3$As$_3$H. The electronic structure…

Lifshitz transition enhanced triplet $p_z$-wave superconductivity in hydrogen doped KCr$_3$As$_3$

- Physics
- 2021

The recently synthesized air-insensitive hydrogen doped KCr3As3 superconductor has aroused great research interests. This material has, for the first time in the research area of the…

A minimal tight-binding model for the quasi-one-dimensional superconductor K2Cr3As3

- PhysicsNew Journal of Physics
- 2019

We present a systematic derivation of a minimal five-band tight-binding model for the description of the electronic structure of the recently discovered quasi one-dimensional superconductor K2Cr3As3.…

p + ip-wave pairing symmetry at type-II van Hove singularities

- PhysicsFrontiers of Physics
- 2021

Based on the random phase approximation calculation in two-orbital honeycomb lattice model, we investigate the pairing symmetry of Ni-based transition-metal trichalcogenides by electron doping access…

Frustrated Structural Instability in Superconducting Quasi-One-Dimensional K_{2}Cr_{3}As_{3}.

- Medicine, PhysicsPhysical review letters
- 2018

This work presents density functional theory and neutron total scattering studies on quasi-one-dimensional superconducting K_{2}Cr_{3}As-3} revealing a frustrated structural instability and suggests a more complex phase diagram than previously assumed with subtle interplays of structure, electron-phonon, and magnetic interactions.

Coexistence of nontrivial topological properties and strong ferromagnetic fluctuations in quasi-one-dimensional A2Cr3As3

- Physicsnpj Computational Materials
- 2020

Superconductivity in crystals without inversion symmetry has received extensive attention due to its unconventional pairing and possible nontrivial topological properties. Using first-principles…

$^{133}$Cs and $^{75}$As NMR investigation of the normal metallic state of the quasi-one-dimensional Cs$_2$Cr$_3$As$_3$

- Physics
- 2016

We report $^{133}$Cs NMR and $^{75}$As Nuclear Quadrupole Resonance (NQR) measurements on the normal metallic state above $T_c$ of a quasi-one-dimensional superconductor Cs$_2$Cr$_3$As$_3$ ($T_c <…

Optimizing the tight-binding parametrization of the quasi-one-dimensional superconductor K2Cr3As3

- Physics, ChemistryAIP Advances
- 2018

We study the tight-binding dispersion of the recently discovered superconductor K2Cr3As3, obtained from Wannier projection of Density Functional Theory (DFT) results. In order to establish…

Progress in Cr- and Mn-based superconductors: a key issues review.

- Physics, MedicineReports on progress in physics. Physical Society
- 2019

The basic physical properties of these novel superconductors are reviewed and it is suggested that spin fluctuations may play crucial roles in mediating the Cooper pairing.

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