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AbstractAbstract
[en] We report the first measurements of the distribution function f of quasiparticles in a nonequilibrium superconductor. For a wide range of quasiparticle-injection energies, f (E) approx. = [1 + exp((E-μ*)/kT*)]-1, where μ* and T* depend on the injection energy. Novel results include a negative μ*, a T* greater than the transition temperature, and a totally unanticipated bump in f at an energy of 3Δ, where Δ is the energy gap. This last result shows that detailed balance is violated in nonequilibrium states
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Journal Article
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Physical Review Letters; v. 41(12); p. 812-815
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