Observation of Raman active phonon with Fano lineshape in quasi-one-dimensional superconductor K${}_2$Cr${}_3$As${}_3$

Abstract

We performed a polarized Raman scattering study of quasi-one-dimensional superconductor K${}_2$Cr${}_3$As${}_3$. We detect two A${}_1^{\prime }$ phonons and three E${}^{\prime }$ phonons. One of the A${}_1^{\prime }$ modes exhibits a nearly temperature-independent Fano lineshape. Based on our first-principles calculations, we ascribe this mode to the in-phase vibrations of Cr atoms within one layer. This observation strongly suggests that the magnetic fluctuations in K${}_2$Cr${}_3$As${}_3$ are coupled to the electronic structure \emph{via} the lattice.

5 pages, 3 figures, 1 table

References in corpus (8)

• Superconductivity in the vicinity of antiferromagnetic order in CrAs
• Superconductivity in quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$ with significant electron correlations
• Unconventional superconductivity in quasi-one-dimensional Rb${}_2$Cr${}_3$As${}_3$
• Superconductivity in quasi-one-dimensional Cs2Cr3As3 with large interchain distance
• NMR Investigation of the Quasi One-dimensional Superconductor K${}_2$Cr${}_3$As${}_3$
• Anisotropic $H_{c2}$, thermodynamic and transport measurements, and pressure dependence of $T_c$ in K${}_2$Cr${}_3$As${}_3$ single crystals
• Magnetism in Quasi-One-Dimensional A${}_2$Cr${}_3$As${}_3$ (A=K,Rb) superconductors
• Raman scattering investigation of the electron-phonon coupling in superconducting Nd(O,F)BiS${}_2$

Cited by in corpus (15)

• Superconductivity at 5 K in quasi-one-dimensional Cr-based KCr3As3 single crystals
• Multiband one-dimensional electronic structure and spectroscopic signature of Tomonoga-Luttinger liquid behavior in K${}_2$Cr${}_3$As${}_3$
• Superconductivity at 10.4 K in a novel quasi-one-dimensional ternary molybdenum pnictide K2Mo3As3
• Strong-coupling electron-phonon superconductivity in noncentrosymmetric quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$
• Coupling of structure to magnetic and superconducting orders in quasi-one-dimensional ${\text{K}}_2{\text{Cr}}_3{\text{As}}_3$
• ${}^{133}$Cs and ${}^{75}$As NMR investigation of the normal metallic state of the quasi-one-dimensional Cs${}_2$Cr${}_3$As${}_3$
• Effect of impurity scattering on superconductivity in K${}_2$Cr${}_3$As${}_3$
• Tuning from Frustrated Magnetism to Superconductivity in Quasi-One-Dimensional KCr${}_3$As${}_3$ Through Hydrogen Doping
• Impact of the lattice on magnetic properties and possible spin nematicity in the S=1 triangular antiferromagnet NiGa${}_2$S${}_4$
• Lattice dynamics of the cluster chain compounds M2Mo6Se6
• Raman study of electron-phonon coupling in thin films of LiTi${}_2$O${}_4$ spinel oxide superconductor
• Intrinsic topological superconductivity with exactly flat surface bands in the quasi-one-dimensional A${}_2$Cr${}_3$As${}_3$ (A=Na, K, Rb, Cs) superconductors
• Raman spectroscopy of K_xCo_{2-y}Se_2 single crystals near the ferromagnet-paramagnet transition
• The upper critical field and its anisotropy in RbCr${}_3$As${}_3$
• A non-invasive dry-transfer method for fabricating mesoscopic devices on sensitive materials