Speaker
Namrata Gurung
(ETH Zurich - Paul Scherrer Institute)
Description
In 5-d transition metal oxides, spin-orbit coupling becomes sizable and its interplay with e.g. the Coulomb interaction has led to the observation of exciting novel ground states. We report here on NaOsO3, which has been proposed to be the first realization of a Slater insulator i.e. a system in which a metal-insulator transition is driven only by antiferromagnetic correlation. We employed Resonant X-ray Diffraction to elucidate the nature of the metal-insulator transition. By a careful study of forbidden reflections, we can exclude the presence of a structural crystallographic change at the phase transition. In addition, we observe an anomaly below the Neel temperature that is indicative of the Slater scenario.
Author
Namrata Gurung
(ETH Zurich - Paul Scherrer Institute)
Co-authors
Naëmi Leo
(PSI - Paul Scherrer Institut)
Prof.
Laura Heyderman
(ETH Zurich - Paul Scherrer Institute)
Dr
Kazunari Yamaura
(National Institute for Material Science, Japan)
Dr
Urs Staub
(Paul-Scherrer Institute, Switzerland)
Dr
Steve Collins
(Diamond Light Source, UK)
Dr
Yves Joly
(Institut Neel, France )
Dr
Valerio Scagnoli
(ETH Zurich - Paul Scherrer Institute)
