A Chiral Triplet Quasi-Two-Dimensional Superconductor in a Parallel Magnetic Field

Abstract

We calculate the parallel upper critical magnetic field $H_{\parallel }(0)$ for an in-plane isotropic quasi-two-dimensional (Q2D) chiral triplet superconductor at zero temperature, $T=0$. In particular, the ratio $H_{\parallel }(0)/(|d{H}_{\parallel }^{GL}/dT{|}_{T=T_c}{T}_c)=0.815$ is defined, where $|d{H}_{\parallel }^{GL}/dT{|}_{T=T_c}$ is the so-called Ginzburg-Landau slope of the upper critical magnetic field, $T_c$ is a superconducting transition temperature at $H=0$. We show that the theoretically obtained above mentioned value strongly contradicts to the experimentally measured ones in a candidate for a chiral triplet superconductivity Sr${}_2$RuO${}_4$, which provides one more argument against the chiral triplet scenario of superconductivity in this compound. Our results may be useful for establishing chiral triplet superconductivity in other Q2D candidates for this phenomenon.

6 pages

References in corpus (6)

• High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
• Chiral P-Wave Order in Sr_2RuO_4
• First-Order Superconducting Transition of Sr2RuO4
• Reentrant superconductivity in UTe${}_2$
• Layered superconductor in a magnetic field: breakdown of the effective masses model
• Four-fold anisotropy of the parallel upper critical magnetic field in a pure layered d-wave superconductor at $T=0$