Small moments without long-range magnetic ordering in the zero-temperature ground state of the double-perovskite iridate Ba$_2$YIrO$_6$

state of the double-perovskite iridate Ba2YIrO6 Hermann Schnait, ∗ Daniel Bauernfeind, Tanusri Saha-Dasgupta, and Markus Aichhorn Institute of Theoretical and Computational Physics, Graz University of Technology, NAWI Graz, Petersgasse 16, Graz, 8010, Austria Center for Computational Quantum Physics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USA S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt lake, Kolkata-700106, India (Dated: February 23, 2022)