%A WU Xian-Xin, LE Cong-Cong, YUAN Jing, FAN Heng, HU Jiang-Ping %T Magnetism in Quasi-One-Dimensional A2Cr3As3 (A=K,Rb) Superconductors %0 Journal Article %D 2015 %J Chin. Phys. Lett. %R 10.1088/0256-307X/32/5/057401 %P 057401%V 32 %N 5 %U {https://cpl.iphy.ac.cn/CN/abstract/article_64390.shtml} %8 2015-04-21 %X

We predict that the recently discovered quasi-one-dimensional superconductors, A2Cr3As3 (A=K,Rb), possess strong frustrated magnetic fluctuations and are nearby a novel in-out co-planar magnetic ground state. The frustrated magnetism is very sensitive to the c-axis lattice constant and can thus be suppressed by increasing pressure. Our results qualitatively explain strong non-Fermi liquid behaviors observed in the normal state of the superconductors as the intertwining between the magnetism and superconductivity can create a large quantum critical region in quasi-one-dimensional systems and also suggest that the materials share similar phase diagrams and superconducting mechanism with other unconventional superconductors, such as cuprates and iron-based superconductors.