Spin excitations in a K 0.84Fe 1.99Se 2 superconductor as studied by Mössbauer spectroscopy
李志伟, 马小明, 庞华, 李发伸
中国物理B . 2012, (4): 47601 -047601 .  DOI: 10.1088/1674-1056/21/4/047601