Superconductor-metal transition in an ultrasmall Josephson junction biased by a noisy voltage source

Details Superconductor-metal transition in an ultrasmall Josephson junction biased by a noisy voltage source Superconductor-metal transition in an ultrasmall Josephson junction biased by a noisy voltage source

2006-07-25

arxiv.org/abs/cond-mat/0607636v2

Phys. Rev. Lett. 98, 030601 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures. Corrected typos and style, added references

Scientific paper

10.1103/PhysRevLett.98.030601

Shot noise in a voltage source changes the character of the quantum (dissipative) phase transition in an ultrasmall Josephson junction: The superconductor-insulator transition transforms into the superconductor-metal transition. In the metallic phase the IV curve probes the voltage distribution generated by shot noise, whereas in the superconducting phase it probes the counting statistics of electrons traversing the noise junction.

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