High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State

Abstract

Polar Kerr effect in the spin-triplet superconductor Sr2RuO4 was measured with high precision using a Sagnac interferometer with a zero-area Sagnac loop. We observed non-zero Kerr rotations as big as 65 nanorad appearing below Tc in large domains. Our results imply a broken time reversal symmetry state in the superconducting state of Sr2RuO4, similar to He3-A.

References in corpus (4)

• Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
• Spontaneous Hall effect in chiral p-wave superconductor
• Determination of the Superconducting Gap Structure in All Bands of the Spin-Triplet Superconductor Sr2RuO4
• Modified Sagnac interferometer for high-sensitivity magneto-optic measurements atcryogenic temperatures

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• Superconducting phase transition of Sr2RuO4 in magnetic field
• Zero-field Hall effect in chiral p-wave superconductors near Kosterlitz-Thouless transition
• Nodeless superconductivity in 4H${}_b$-TaS${}_2$ with broken time reversal symmetry
• Symmetry Aspects of Chiral Superconductors
• Absence of spontaneous time-reversal symmetry breaking and ferromagnetism in superconducting NiBi3 single crystal
• First order superconducting phase transition in chiral $p+ip$ system
• Symmetry properties of superconducting order parameter in Sr${}_2$RuO${}_4$
• $T_c$ and Pauli limited critical field of ${\text{Sr}}_2\text{Ru}{\text{O}}_4$: uniaxial strain dependence
• Superconductivity mystery turns 25
• Dynamics of skyrmions and edge states in the resistive regime of mesoscopic \emph{p}-wave superconductors
• Thermal Hall conductivity in the spin-triplet superconductor with broken time-reversal symmetry
• Hall conductivity in the normal and superconducting phases of the Rashba system with Zeeman field
• Topologically Induced Fermion Parity Flips in Superconductor Vortices
• Theory of disordered unconventional superconductors
• Anomalous anisotropic behaviour of spin-triplet proximity effect in Au/SrRuO${}_3$/Sr${}_2$RuO${}_4$ junctions
• Chiral superconductivity in nematic states
• Anomalous Hall Effects in Chiral Superconductors
• Direct evidence for the absence of coupling between shear strain and superconductivity in Sr2RuO4
• Pressure induced superconducting dome in LaNiGa2
• Spin-glass state in nickelate superconductors
• Polar Kerr Effect in Multiband Spin-Orbit Coupled Superconductors
• Magnetic edge fields in UTe${}_2$ near zero background fields
• Microwave Hall measurements using a circularly polarized dielectric cavity
• Possible two-component pairings in electron-doped Bi${}_2$Se${}_3$ based on a tight-binding model
• Spontaneous magnetic field and disorder effects in BaPtAs_1-x_Sb_x_ with honeycomb network
• Topological Magneto-optical Kerr Effect without Spin-orbit Coupling in Spin-compensated Antiferromagnet
• Thermal fluctuations and vortex lattice structures in chiral $p$-wave superconductors: robustness of double-quanta vortices
• Muon Knight shift as a precise probe of the superconducting symmetry of Sr${}_2$RuO${}_4$
• Distinguishing $d_{xz}+i{d}_{yz}$ and $d_{x^2-y^2}$ pairing in $S{r}_{2}Ru{O}_4$ by high magnetic field H-T phase diagrams
• Spin Fluctuations in Sr${}_{1.8}$La${}_{0.2}$RuO${}_4$
• How vortex bound states affect the Hall conductivity of a chiral $p\pm ip$ superconductor
• Phenomenological model for the third-harmonic magnetic response of superconductors: application to Sr${}_2$RuO${}_4$
• Probing time reversal symmetry breaking topological superconductivity in twisted double layer copper oxides with polar Kerr effect
• Why Scanning Tunneling Microscopy on Sr${}_2$RuO${}_4$ sometimes doesn't see the superconducting gap
• Impurity-Induced Anomalous Thermal Hall Effect in Chiral Superconductors
• Probing time-reversal symmetry breaking at microwave frequencies
• Examining the possibility of chiral superconductivity in Sr${}_2$RuO${}_4$ and other compounds via applied supercurrent
• DC-current induced domain wall in a chiral $p$-wave superconductor
• Influence of Fermi Surface Geometry and Van Hove Singularities on the Optical Response of Sr${}_2$RuO${}_4$
• Pairing-induced Momentum-space Magnetism and Its Implication In Optical Anomalous Hall Effect In Chiral Superconductors
• Magneto-optical Kerr effect of a Ni_{2.00}Mn_{1.16}Ga_{0.84} single crystal across austenite and intermartensite transitions
• Microwave resonator for measuring time-reversal symmetry breaking at cryogenic temperatures
• Inherent electro-optic Kerr rotation
• Pair-mixing induced Time-reversal-breaking superconductivity
• Orbital optical activity in noncentrosymmetric metals and superconductors
• A Chiral Triplet Quasi-Two-Dimensional Superconductor in a Parallel Magnetic Field
• Current-induced superconducting anisotropy of Sr${}_2$RuO${}_4$
• Signature of chiral superconducting order parameter evidenced in mesoscopic superconductors
• Evolution and Instability of Bogoliubov Fermi Surfaces under Zeeman Field