A single-crystal neutron diffraction study on magnetic structure of CsCo2Se2
Juanjuan Liu(刘娟娟)1, Jieming Sheng(盛洁明)1, Wei Luo(罗伟)1, Jinchen Wang(汪晋辰)1, Wei Bao(鲍威)1, Jinhu Yang(杨金虎)2, Minghu Fang(方明虎)3,4, S A Danilkin5
1 Department of Physics, Renmin University of China, Beijing 100872, China;2 Department of Physics, Hangzhou Normal University, Hangzhou 310036, China;3 Department of Physics, Zhejiang University, Hangzhou 310027, China;4 Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China;5 Bragg Institute, ANSTO, Locked Bag 2001, Kirrawee DC NSW 2232, Australia>
The magnetic structure of CsCo2Se2 was investigated using single-crystal neutron diffraction technique. An antiferromagnetic transition with the propagation vector (0,0,1) was observed at TN=78 K. The Co magnetic moment 0.772(6) μB at 10 K pointing in the basal plane couples ferromagnetically in the plane, which stacks antiferromagnetically along the c direction. Tuning and suppressing the interplane antiferromagnetic interaction may be crucial to induce a superconducting state in the material.
Project supported by the National Basic Research Program of China (Grant No. 2012CB921700), the National Natural Science Foundation of China (Grant No. 11190024), the Fundamental Research Funds for the Central Universities, China, and the Research Funds of Renmin University of China (Grant Nos. 17XNLF04 and 17XNLF06). J.S. acknowledges support from China Scholarship Council.
Juanjuan Liu, Jieming Sheng, Wei Luo, Jinchen Wang, Wei Bao, Jinhu Yang, Minghu Fang, S A Danilkin. A single-crystal neutron diffraction study on magnetic structure of CsCo2Se2[J]. Chin. Phys. B, 2018, 27(11): 117401.