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Recently room temperature superconductivity with degrees Celsius has been discovered in a pressurized complex ternary hydride, CSH x, which is a carbon-and hydrogen-doped H 3 S alloy. The nanoscale structure of H 3 S is a particular realization of the 1993 patent claim of superlattice of quantum wires for room temperature superconductors and the maximum T C occurs at the top of a superconducting dome. Here we focus on the electronic structure of materials showing nanoscale heterostructures at the atomic limit made of a superlattice of quantum wires like hole-doped cuprate perovskites, and organics focusing on A15 intermetallics and pressurized hydrides. We provide a perspective of the theory of room temperature multigap superconductivity in heterogeneous materials tuned at a shape resonance or Fano resonance in the superconducting gaps near a Lifshitz transition focusing on H 3 S where …
IOP Publishing
Publication date: 
17 May 2021

Maria Vittoria Mazziotti, Thomas Jarlborg, Antonio Bianconi, Antonio Valletta

Biblio References: 
Volume: 134 Issue: 1 Pages: 17001
EPL (Europhysics Letters)