Searching for triplet superconductivity in the Quasi-One-Dimensional K2Cr3As3

Abstract

The superconducting state of the newly discovered superconductor K${}_2$Cr${}_3$As${}_3$ with a quasi-one-dimensional crystal structure ($T_{\mathbf{c}}\sim$ 6 K) has been investigated by using magnetization and muon-spin relaxation or rotation ($\mu$SR) measurements. Our analysis of the temperature dependence of the superfluid density obtained from the transverse field (TF) $\mu$SR measurements fit very well to an isotropic $s$-wave character for the superconducting gap. Furthermore a similarly good fit can also be obtained using a $d$-wave model with line nodes. Our zero-field $\mu$SR measurements do reveal very weak evidence of the spontaneous appearance of an internal magnetic field near the transition temperature, which might indicate that the superconducting state is not conventional. This observation suggests that the electrons are paired via unconventional channels such as spin fluctuations, as proposed on the basis of theoretical models of K${}_2$Cr${}_3$As${}_3$. Furthermore, from our TF $\mu$SR study the magnetic penetration depth ${\lambda }_L$, superconducting carrier density $n_s$, and effective-mass enhancement $m^{\ast }$ have been estimated to be ${\lambda }_L(0)$ = 454(4) nm, $n_s$ = 2.4$\times$10${}^{27}$ carriers/m${}^3$, and $m^{\ast }$ = 1.75 $m_e$, respectively.

5 pages, 4 figures

References in corpus (12)

• Magnetic Penetration Depth in Unconventional Superconductors
• Evidence for time-reversal symmetry breaking in the non-centrosymmetric superconductor LaNiC${}_2$
• 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${}_3$
• Triplet $p_z$-wave pairing in quasi one dimensional A${}_2$Cr${}_3$As${}_3$ superconductors
• Anisotropic $H_{c2}$, thermodynamic and transport measurements, and pressure dependence of $T_c$ in K${}_2$Cr${}_3$As${}_3$ single crystals
• Broken time-reversal symmetry probed by muon spin relaxation in the caged type superconductor Lu${}_5$Rh${}_6$Sn${}_{18}$
• Magnetism in Quasi-One-Dimensional A${}_2$Cr${}_3$As${}_3$ (A=K,Rb) superconductors
• Physical properties of noncentrosymmetric superconductor LaIrSi3: A μSR study
• Evidence for nodal superconductivity in quasi-one-dimensional K${}_2$Cr${}_3$As${}_3$

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