Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 54: Correlated Electrons: Complex Oxides and Other Materials
TT 54.4: Vortrag
Donnerstag, 4. April 2019, 10:15–10:30, H22
Tuning the electronic structure of LaNiO3 heterostructures — •Jasmin Jandke1, Muntaser Naamneh1, Marco Caputo1,2, Eduardo B. Guedes1,2, Anna Zhakarova1, Cinthia Piamonteze1, Nicholas C. Plumb1, Ming Shi1, and Milan Radovic1 — 1Photon Science Department, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland — 2Institute of Condensed Matter Physics, Ecole Polytechnique Fédrale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
Since many years rare earth nickelates (RNiO3) attract researchers interests due to their wide variety of fascinating physical properties which are tunable by the interplay of electron correlations and crystal structure [1]. It was suggested that the tunability of electron correlations could be used to induce a cupratelike Fermi surface in RNiO3 thin films.
Motivated by this, we are investigating the evolution of the electronic structure of LaNiO3 (LNO) thin films in proximity to manganite layers (strontium and calcium doped lanthanum manganite - LSMO and LCMO) grown on STO and NGO substrates. The films were grown by pulsed laser deposition (PLD). The combined study of angle resolved photoemission spectroscopy (ARPES), transport properties and X-ray magnetic circular dichroism (XMCD) reveal an anomalies around T=50K and T=150K as well as a strong dependence on the substrate. Understanding these properties could be crucial for tuning the nickelates towards superconductivity.
J. Chaloupka et al., Phys. Rev. Lett. 100, 016404 (2008)