The discovery of high-temperature superconductivity (HTSC) in strongly correlated cuprates opened a new chapter in condensed matter physics, breaking existing stereotypes of what is a material base for a good supercon- ductor (“Matthias rules”), at the same time emphasizing the richness and challenge of strongly correlated physics, personified by the most strongly correlated 3 d ion, Cu 2 +。最近报道的新化合物Cuag(So 4)2以一种引人入胜的方式结合了相同的离子与最强烈相关的4 d One,Ag 2 +。在这封信中,我们对该材料的电子和磁性特性进行了详细的分析,并表明它与HTSC酸粉饼的不同方式非常不同,并在密切相关的材料中为超导性和磁性(尤其是Altermagnetism)(尤其是Altermagnetism)打开了一扇门。
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