A pr 2 02 2 Effect of iron vacancies on the magnetic order and spin dynamics of the spin ladder

Zengjia Liu*, Xiao-Sheng Ni, ∗ Lisi Li, Hualei Sun, Feixiang Liang, Benjamin A. Frandsen, Andrew D. Christianson, Clarina dela Cruz, Zhijun Xu, 5 Dao-Xin Yao, Jeffrey W. Lynn, Robert J. Birgeneau, 7 Kun Cao, † and Meng Wang ‡ Center for Neutron Science and Technology, School of Physics, Sun Yat-Sen University, Guangzhou, 510275, China Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, USA Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA Department of Physics, University of California, Berkeley, California 94720, USA Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA