Li1-xNbO2 films show a superconducting dome, non-Fermi-liquid transport, and Kondo-like upturns as lithium is electrochemically removed, suggesting a quantum critical point near optimal doping.
In the vicinity of the superconducting state, for example, A coefficient was as large as 1×10 −7 Ω c m K−2 and became comparable to those of heavy fermion systems [3,42,43]
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Superconducting Dome and Quantum Criticality in Two-Dimensional NbO2 Triangular Lattice
Li1-xNbO2 films show a superconducting dome, non-Fermi-liquid transport, and Kondo-like upturns as lithium is electrochemically removed, suggesting a quantum critical point near optimal doping.