Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

TT: Fachverband Tiefe Temperaturen

TT 54: Correlated Electrons: Complex Oxides and Other Materials

TT 54.9: Vortrag

Donnerstag, 4. April 2019, 11:45–12:00, H22

New insights into doped Sr₂IrO₄ — •Benjamin Lenz¹, Cyril Martins², and Silke Biermann^1,3 — ¹CPHT, Ecole Polytechnique, Palaiseau, France — ²LCPQ, Université Paul Sabatier, Toulouse, France — ³Collège de France, Paris, France

The spin-orbit system Sr₂IrO₄ has been in the spotlight in recent years due to its striking similarity to isostructural high-T_c superconducting copper oxides. Here, we present new insights into the spectral properties of Sr₂IrO₄ using a combination of ab-initio density functional theory and quantum cluster techniques. We find good agreement with available angular-resolved photoemission spectra in the antiferromagnetic low-temperature and high-temperature paramagnetic phases of pure Sr₂IrO₄, as well as for electron- and hole-doped compounds. Furthermore, we discuss an intriguing k-dependence in the composition of the spin-orbit entangled j_eff=1/2 states.