Pekola, J. P. and Maisi, V. F. and Kafanov, S. and Chekurov, N. and Kemppinen, A. and Pashkin, Yuri and Saira, O. -P. and Mottonen, M. and Tsai, J. S. (2010) Environment-Assisted Tunneling as an Origin of the Dynes Density of States. Physical review letters, 105 (2): 026803. -. ISSN 0031-9007
Full text not available from this repository.Abstract
We show that the effect of a high-temperature environment in current transport through a normal metal-insulator-superconductor tunnel junction can be described by an effective density of states in the superconductor. In the limit of a resistive low-Ohmic environment, this density of states reduces into the well-known Dynes form. Our theoretical result is supported by experiments in engineered environments. We apply our findings to improve the performance of a single-electron turnstile, a potential candidate for a metrological current source.