Superconductivity at 12 K in La${}_2$IOs${}_2$: a 5d metal with osmium honeycomb layer

Abstract

We discovered superconductivity at $T_c$ = 12 K in a layered compound La${}_2$IOs${}_2$ with osmium honeycomb network. Despite heavy constituent elements unfavorable for phonon mediated mechanism, $T_c$ is the highest among lanthanoid iodides made of lighter elements such as La${}_2$IRu${}_2$ with $T_c$ = 4.8 K. Electronic anomalies are observed below 60 K similar to those observed in La${}_2$IRu${}_2$ below 140 K. La${}_2$IOs${}_2$ is a layered 5d electron system providing a platform to investigate the interplay between the electronic anomaly, superconductivity, and strong magnetic field.

arXiv comment7 pages, 4 figures

References in corpus (23)

• Advanced capabilities for materials modelling with Quantum ESPRESSO
• Correlated quantum phenomena in the strong spin-orbit regime
• Superconductivity in Cu_xTiSe_2
• $\alpha$-RuCl3: a Spin-Orbit Assisted Mott Insulator on a Honeycomb Lattice
• High Temperature Superconductivity in Iron Pnictides and Chalcogenides
• Double superconducting dome and triple enhancement of Tc in the kagome superconductor CsV3Sb5 under high pressure
• Superconductivity at 1 K in Cd2Re2O7
• Electronic Structure, Electron-Phonon Coupling, and Multiband Effects in MgB2
• Monte Carlo study of an unconventional superconducting phase in Ir-oxide J_{eff}=1/2 Mott insulators induced by carrier doping
• Evidence for Time-Reversal-Symmetry-Broken Superconductivity in Locally Noncentrosymmetric SrPtAs
• Doping a spin-orbit Mott Insulator: Topological Superconductivity from the Kitaev-Heisenberg Model and possible application to (Na2/Li2)IrO3
• Chiral $d$-wave Superconductivity in SrPtAs
• Parity-breaking phases of spin-orbit-coupled metals with gyrotropic, ferroelectric and multipolar orders
• Improved tetrahedron method for the Brillouin-zone integration applicable to response functions
• A review of two-band superconductivity: materials and effects on the thermodynamic and reversible mixed-state properties
• New Type Phase Transition of Li2RuO3 with Honeycomb Structure
• Odd-parity superconductivity in the vicinity of inversion symmetry breaking in spin-orbit-coupled systems
• Superconductivity in the Honeycomb-Lattice Pnictide SrPtAs
• Odd-parity triplet superconductivity in multi-orbital materials with strong spin-orbit coupling: applications to doped Sr2IrO4
• Competition between d-wave and topological p-wave superconductivity in the doped Kitaev-Heisenberg model
• Topological superconducting phases from inversion symmetry breaking order in spin-orbit-coupled systems
• Pyrochlore Oxide Superconductor Cd2Re2O7 Revisited
• Multi-band Superconductivity in the Chevrel Phases SnMo6S8 and PbMo6S8

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