Speaker
Cissy Suen
(University of British Columbia (Quantum Matter Institute), Max Planck Institute for Solid State Research, Advanced Light Source (Lawrence Berkeley National Laboratory))
Description
The quasi-2D Mott insulator Ca2RuO4 has a metal-to-insulator transition (MIT) controllable through temperature, pressure, epitaxial strain, and curiously -- electrical current. However, the mechanism by which the current induces the MIT has yet to be understood. We use angle-resolved photoemisson spectroscopy (ARPES) with nanometer scale resolution to compare the electronic band structures in equilibrium and in non-equilibrium, or with and without current respectively. Preliminary results show a clear closure of the band gap and a more equal distribution in photoemission intensities.
Primary authors
Dr
Aaron Bostwick
(Advanced Light Source (Lawrence Berkeley National Lab))
Cissy Suen
(University of British Columbia (Quantum Matter Institute), Max Planck Institute for Solid State Research, Advanced Light Source (Lawrence Berkeley National Laboratory))
Andrea Damascelli
(University of British Columbia (Quantum Matter Institute))
Prof.
Bernhard Keimer
(Max Planck Institute for Solid State Research)
Christopher Jozwiak
(Advanced Light Source (Lawrence Berkeley National Lab))
Eli Rotenberg
(Advanced Light Source (Lawrence Berkeley National Lab))
Dr
Igor Marković
(University of British Columbia (Quantum Matter Institute))
Dr
Katrin Fürsich
(Max Planck Institute for Solid State Research)
Dr
Marta Zonno
(University of British Columbia (Quantum Matter Institute))
Dr
Maximilian Krautloher
(Max Planck Institute for Solid State Research)
Sergey Gorovikov
(Canadian Light Source)
Dr
Sergey Zhadanovich
(University of British Columbia (Quantum Matter Institute))
Tor Pederson
(Canadian Light Source)
