Intrinsic constraint on T c for unconventional superconductivity by Qiong Qin, Yi-feng Yang

“…The superconductivity is suppressed on both sides away from its melting quantum critical point. Thus, the magnitude of T c is constrained by the plaquette state for the d-wave superconductivity, in resemblance of other competing orders. …”
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Gapless topological behaviors in a long-range quantum spin chain by Sheng Yang, Hai-Qing Lin, Xue-Jia Yu

“…However, recent research shifts focus to quantum critical points or phases that exhibit nontrivial topological properties. …”
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