Decrease in the background in electron–phonon interaction spectra for point contacts with a superconducting electrode
Г. В. КамарчукPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovA. V. KhotkevichPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kovI. K. YansonPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Khar’kov
ABI
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A substantial decrease is observed in the level of the background in point contact electron–phonon interaction spectra for contacts between different metals at the transition of one of the metals into the superconducting state. The magnitude of the effect is maximum for pure contacts, characterized by the highest excess currents in the case when one of the electrodes in the contact is in the superconducting state.
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