Gapless dynamic magnetic ground state in the charge-gapped trimer iridate <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>Ba</mml:mi> <mml:mn>4</mml:mn> </mml:msub> <mml:msub> <mml:mi>NbIr</mml:mi> <mml:mn>3</mml:mn> </mml:msub> <mml:msub> <mml:mi mathvariant="normal">O</mml:mi> <mml:mn>12</mml:mn> </mml:msub> </mml:mrow> </mml:math>A. Bandyopadhyay, Kwang‐Yong Choi, D. T. Adroja et al.|Physical Review Materials|2024Cited by 6