Noise cross-correlation and Cooper pair splitting efficiency in multi-teminal superconductor junctions

J. A. Celis Gil; P. S. Gomez; William J. Herrera

doi:10.1016/j.ssc.2017.04.009

Noise cross-correlation and Cooper pair splitting efficiency in multi-teminal superconductor junctions

J. A. Celis Gil, P. S. Gomez^*, William J. Herrera

^*Corresponding author for this work

QN/Thijssen Group

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

Abstract

We analyze the non-local shot noise in a multi-terminal junction formed by two Normal metal leads connected to one superconductor. Using the cross Fano factor and the shot noise, we calculate the efficiency of the Cooper pair splitting. The method is applied to d-wave and iron based superconductors. We determine that the contributions to the noise cross-correlation are due to crossed Andreev reflections (CAR), elastic cotunneling, quasiparticles transmission and local Andreev reflections. In the tunneling limit, the CAR contribute positively to the noise cross-correlation whereas the other processes contribute negatively. Depending on the pair potential symmetry, the CAR are the dominant processes, giving as a result a high efficiency for Cooper pair split. We propose the use of the Fano factor to test the efficiency of a Cooper pair splitter device.

Original language	English
Pages (from-to)	25-32
Journal	Solid State Communications
Volume	258
DOIs	https://doi.org/10.1016/j.ssc.2017.04.009
Publication status	Published - 2017

Keywords

Andreev reflection
Iron pnictides
Nanocontacts
Nanostructures
Pairing symmetries
SN junctions
Superconductivity

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10.1016/j.ssc.2017.04.009

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title = "Noise cross-correlation and Cooper pair splitting efficiency in multi-teminal superconductor junctions",

abstract = "We analyze the non-local shot noise in a multi-terminal junction formed by two Normal metal leads connected to one superconductor. Using the cross Fano factor and the shot noise, we calculate the efficiency of the Cooper pair splitting. The method is applied to d-wave and iron based superconductors. We determine that the contributions to the noise cross-correlation are due to crossed Andreev reflections (CAR), elastic cotunneling, quasiparticles transmission and local Andreev reflections. In the tunneling limit, the CAR contribute positively to the noise cross-correlation whereas the other processes contribute negatively. Depending on the pair potential symmetry, the CAR are the dominant processes, giving as a result a high efficiency for Cooper pair split. We propose the use of the Fano factor to test the efficiency of a Cooper pair splitter device.",

keywords = "Andreev reflection, Iron pnictides, Nanocontacts, Nanostructures, Pairing symmetries, SN junctions, Superconductivity",

author = "{Celis Gil}, {J. A.} and Gomez, {P. S.} and Herrera, {William J.}",

year = "2017",

doi = "10.1016/j.ssc.2017.04.009",

language = "English",

volume = "258",

pages = "25--32",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier",

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TY - JOUR

T1 - Noise cross-correlation and Cooper pair splitting efficiency in multi-teminal superconductor junctions

AU - Celis Gil, J. A.

AU - Gomez, P. S.

AU - Herrera, William J.

PY - 2017

Y1 - 2017

N2 - We analyze the non-local shot noise in a multi-terminal junction formed by two Normal metal leads connected to one superconductor. Using the cross Fano factor and the shot noise, we calculate the efficiency of the Cooper pair splitting. The method is applied to d-wave and iron based superconductors. We determine that the contributions to the noise cross-correlation are due to crossed Andreev reflections (CAR), elastic cotunneling, quasiparticles transmission and local Andreev reflections. In the tunneling limit, the CAR contribute positively to the noise cross-correlation whereas the other processes contribute negatively. Depending on the pair potential symmetry, the CAR are the dominant processes, giving as a result a high efficiency for Cooper pair split. We propose the use of the Fano factor to test the efficiency of a Cooper pair splitter device.

AB - We analyze the non-local shot noise in a multi-terminal junction formed by two Normal metal leads connected to one superconductor. Using the cross Fano factor and the shot noise, we calculate the efficiency of the Cooper pair splitting. The method is applied to d-wave and iron based superconductors. We determine that the contributions to the noise cross-correlation are due to crossed Andreev reflections (CAR), elastic cotunneling, quasiparticles transmission and local Andreev reflections. In the tunneling limit, the CAR contribute positively to the noise cross-correlation whereas the other processes contribute negatively. Depending on the pair potential symmetry, the CAR are the dominant processes, giving as a result a high efficiency for Cooper pair split. We propose the use of the Fano factor to test the efficiency of a Cooper pair splitter device.

KW - Andreev reflection

KW - Iron pnictides

KW - Nanocontacts

KW - Nanostructures

KW - Pairing symmetries

KW - SN junctions

KW - Superconductivity

UR - http://www.scopus.com/inward/record.url?scp=85018498988&partnerID=8YFLogxK

U2 - 10.1016/j.ssc.2017.04.009

DO - 10.1016/j.ssc.2017.04.009

M3 - Article

AN - SCOPUS:85018498988

SN - 0038-1098

VL - 258

SP - 25

EP - 32

JO - Solid State Communications

JF - Solid State Communications

ER -

Noise cross-correlation and Cooper pair splitting efficiency in multi-teminal superconductor junctions

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Keywords

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