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Oscillations of the superconducting temperature induced by quantum well states in thin metallic films: Numerical solution of the Bogoliubov–de Gennes equations
2007
Physical Review B
Quantum confinement of electrons in a high-quality metallic nanofilm results in the formation of quantumwell states. The band of single-electron states is split into a series of subbands moving in energy with changing film thickness. When the bottom of such a subband passes through the Fermi surface, a shape resonance appears leading to oscillations of the critical temperature T c as a function of film thickness. We present a quantitative description of recent experimental data on the
doi:10.1103/physrevb.75.014519
fatcat:ifscu6ndsfbn5bhi6d3mk4t6rm