Progress in quasi-one-dimensional Mn-based superconductors
Exploration of new high-temperature superconducting materials and the revelation of unconventional superconductivity mechanisms have always been the focus of condensed matter physics.Except for the two large families of copper oxide and iron-based superconductors,other transition metal-based unconventional superconductors are relatively rare,and manganese-based superconductors are particularly scarce.Reducing the lattice dimension usually weakens magnetic ordering and enhances spin fluctuation,which can be utilized to explore more manganese-based superconductors.Recently,a new family of quasi-one-dimensional manganese-based materials,AMn6Bi5(A=Na,K,Rb,and Cs),was discovered.AMn6Bi5(A=K,Rb,and Cs)exhibits unconventional superconductivity under high pressure.The discovery of these new quasi-one-dimensional manganese-based superconductors has further elucidated our understanding of the correlation between unconventional superconductivity and antiferromagnetism.
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