Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Environment-Assisted Tunneling as an Origin of the Dynes Density of States
AU - Pekola, J. P.
AU - Maisi, V. F.
AU - Kafanov, S.
AU - Chekurov, N.
AU - Kemppinen, A.
AU - Pashkin, Yuri
AU - Saira, O. -P.
AU - Mottonen, M.
AU - Tsai, J. S.
PY - 2010/7/6
Y1 - 2010/7/6
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=77954418901&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.105.026803
DO - 10.1103/PhysRevLett.105.026803
M3 - Journal article
VL - 105
SP - -
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 2
M1 - 026803
ER -