4 papers
Persistence of charge ordering instability to Coulomb engineering in the excitonic insulator candidate TiSe
Sebastian Buchberger, Yann in 't Veld, Akhil Rajan +11
TiSe has long been considered one of the best candidate materials to host the elusive excitonic insulator (EI) phase. However, a finite coupling to the lattice can generically…
Dichotomy of electron-phonon interactions in the delafossite PdCoO: From weak bulk to polaronic surface coupling
Gesa-R. Siemann, Philip A. E. Murgatroyd, Tommaso Antonelli +6
The metallic delafossites host ultra-high mobility carriers in the bulk, while at their polar surfaces, intrinsic electronic reconstructions stabilise markedly distinct electronic…
Avoided metallicity in a hole-doped Mott insulator on a triangular lattice
Chi Ming Yim, Gesa-R. Siemann, Srdjan StavriÄ +9
Doping of a Mott insulator gives rise to a wide variety of exotic emergent states, from high-temperature superconductivity to charge, spin, and orbital orders. The physics underpin…
Spin-orbit coupling induced Van Hove singularity in proximity to a Lifshitz transition in SrRuO
Carolina A. Marques, Philip A. E. Murgatroyd, Rosalba Fittipaldi +19
Van Hove singularities (VHss) in the vicinity of the Fermi energy often play a dramatic role in the physics of strongly correlated electron materials. The divergence of the density…