Abstract
We analyze the shot noise in a voltage biased superconducting quantum point-contact. Results are presented for the single channel case with arbitrary transmission. In the limit of very low transmission it is found that the effective charge, defined from the noise-current ratio, exhibits a step-like behavior as a function of voltage with well defined plateaus at integer values of the electronic charge. This multiple charge corresponds to the transmitted charge in a Multiple Andreev Reflection (MAR) process. This effect gradually disappears for increasing transmission due to interference between different MAR processes.
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© 2000 Springer-Verlag Berlin Heidelberg
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Cuevas, J.C., Martín-Rodero, A., Yeyati, A.L. (2000). Shot Noise and Coherent Multiple Charge Transfer in Superconducting Quantum Point-Contacts. In: Reguera, D., Rubí, J.M., Platero, G., Bonilla, L.L. (eds) Statistical and Dynamical Aspects of Mesoscopic Systems. Lecture Notes in Physics, vol 547. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45557-4_30
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DOI: https://doi.org/10.1007/3-540-45557-4_30
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Publisher Name: Springer, Berlin, Heidelberg
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Online ISBN: 978-3-540-45557-8
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