Noise and full counting statistics of incoherent multiple Andreev reflection
(2005) In Physical Review Letters 94.- Abstract
- We present a general theory for the full counting statistics of multiple Andreev reflections in incoherent superconducting-normal-superconducting contacts. The theory, based on a stochastic path integral approach, is applied to a superconductor-double-barrier system. It is found that all cumulants of the current show a pronounced subharmonic gap structure at voltages V=2Δ/en. For low voltages V≪Δ/e, the counting statistics results from diffusion of multiple charges in energy space, giving the pth cumulant ⟨Qp⟩∝V2-p, diverging for p≥3. We show that this low-voltage result holds for a large class of incoherent superconducting-normal-superconducting contacts.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/721822
- author
- Samuelsson, Peter LU and Pilgram, S
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 94
- article number
- 086806
- publisher
- American Physical Society
- external identifiers
-
- scopus:18144363602
- pmid:15783919
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.94.086806
- language
- English
- LU publication?
- yes
- id
- 5d2002d7-ff1b-4729-8fa9-695ccc5f8c02 (old id 721822)
- date added to LUP
- 2016-04-01 11:41:02
- date last changed
- 2022-04-12 23:40:54
@article{5d2002d7-ff1b-4729-8fa9-695ccc5f8c02, abstract = {{We present a general theory for the full counting statistics of multiple Andreev reflections in incoherent superconducting-normal-superconducting contacts. The theory, based on a stochastic path integral approach, is applied to a superconductor-double-barrier system. It is found that all cumulants of the current show a pronounced subharmonic gap structure at voltages V=2Δ/en. For low voltages V≪Δ/e, the counting statistics results from diffusion of multiple charges in energy space, giving the pth cumulant ⟨Qp⟩∝V2-p, diverging for p≥3. We show that this low-voltage result holds for a large class of incoherent superconducting-normal-superconducting contacts.}}, author = {{Samuelsson, Peter and Pilgram, S}}, issn = {{1079-7114}}, language = {{eng}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Noise and full counting statistics of incoherent multiple Andreev reflection}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.94.086806}}, doi = {{10.1103/PhysRevLett.94.086806}}, volume = {{94}}, year = {{2005}}, }