Probing time reversal symmetry breaking topological superconductivity in twisted double layer copper oxides with polar Kerr effect
arXiv:2103.10445 · doi:10.1103/PhysRevLett.127.157001
Abstract
Recent theoretical work predicted emergence of chiral topological superconducting phase with spontaneously broken time reversal symmetry in a twisted bilayer composed of two high- cuprate monolayers, such as BiSrCaCuO. Here we identify large intrinsic Hall response that can be probed through the polar Kerr effect measurement as a convenient signature of the -broken phase. Our modelling predicts the Kerr angle to be in the range of 10-100 rad, which is a factor of times larger than what is expected for the leading chiral supercondutor candidate SrRuO. In addition we show that the optical Hall conductivity can be used to distinguish between the topological phase and the phase which is also expected to be present in the phase diagram but is topologically trivial.
arXiv comment10 pages, 8 figures
References in corpus (23)
- Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
- Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
- Observation of the fractional ac Josephson effect: the signature of Majorana particles
- Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Anomalous modulation of a zero bias peak in a hybrid nanowire-superconductor device
- Observation of topological superconductivity on the surface of an iron-based superconductor
- High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time Reversal Symmetry in the Superconducting State
- Pronounced drop of O NMR Knight shift in superconducting state of SrRuO
- Chiral Superconductors
- Bulk superconducting phase with a full energy gap in the doped topological insulator Cu_xBi_2Se_3
- Observation of broken time-reversal symmetry in the heavy fermion superconductor UPt
- Magneto-Optical Faraday and Kerr Effects in Topological Insulator Films and in Other Layered Quantized Hall Systems
- High-temperature topological superconductivity in twisted double layer copper oxides
- Polar Kerr Effect as Probe for Time-Reversal Symmetry Breaking in Unconventional Superconductors
- Doping dependent optical properties of Bi2Sr2CaCu2O8+d
- Collective modes and electromagnetic response of a chiral superconductor
- Intrinsic Hall effect in a multiband chiral superconductor in the absence of an external magnetic field
- Frequency and temperature dependence of the anomalous Hall conductivity in a chiral px+ipy superconductor with impurities
- Impurity Induced Polar Kerr Effect in A Chiral p-wave Superconductor
- Intrinsic ac anomalous Hall effect of nonsymmorphic chiral superconductors with an application to
- Polar Kerr effect from chiral-nematic charge order
- Topology in abundance