| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Magnetism in Quasi-One-Dimensional A2Cr3As3 (A=K,Rb) Superconductors |
| WU Xian-Xin1, LE Cong-Cong1, YUAN Jing1, FAN Heng1,2, HU Jiang-Ping1,2,3** |
1Institute of Physics, Chinese Academy of Sciences, Beijing 100190
2Collaborative Innovation Center of Quantum Matter, Beijing 100190
3Department of Physics, Purdue University, West Lafayette 47907, USA |
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| Cite this article: |
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WU Xian-Xin, LE Cong-Cong, YUAN Jing et al 2015 Chin. Phys. Lett. 32 057401 |
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Abstract 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.
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Received: 09 April 2015
Published: 01 June 2015
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| PACS: |
74.70.-b
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(Superconducting materials other than cuprates)
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74.25.Ha
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(Magnetic properties including vortex structures and related phenomena)
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74.20.Pq
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(Electronic structure calculations)
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74.20.Rp
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(Pairing symmetries (other than s-wave))
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