Tunable pseudogaps due to nonlocal coherent transport in voltage-biased three-terminal Josephson junctions

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Tunable pseudogaps due to nonlocal coherent transport in voltage-biased three-terminal Josephson junctions. / Padurariu, C.; Jonckheere, T.; Rech, J.; Martin, T.; Feinberg, D.

In: Physical Review B, Vol. 95, No. 20, 205437, 30.05.2017, p. 1-13.

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Padurariu, C. ; Jonckheere, T. ; Rech, J. ; Martin, T. ; Feinberg, D. / Tunable pseudogaps due to nonlocal coherent transport in voltage-biased three-terminal Josephson junctions. In: Physical Review B. 2017 ; Vol. 95, No. 20. pp. 1-13.

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@article{408c702e632f4e60a428a2cf68bb9168,
title = "Tunable pseudogaps due to nonlocal coherent transport in voltage-biased three-terminal Josephson junctions",
abstract = "We investigate the proximity effect in junctions between N=3 superconductors under commensurate voltage bias. The bias is chosen to highlight the role of transport processes that exchange multiple Cooper pairs coherently between more than two superconductors. Such nonlocal processes can be studied in the dc response, where local transport processes do not contribute. We focus on the proximity-induced normal density of states that we investigate in a wide parameter space. We reveal the presence of deep and highly tunable pseudogaps and other rich structures. These are due to a static proximity effect that is absent for N=2 and is sensitive to an emergent superconducting phase associated to nonlocal coherent transport. In comparison with results for N=2, we find similarities in the signature peaks of multiple Andreev reflections. We discuss the effect of electron-hole decoherence and of various types of junction asymmetries. Our predictions can be investigated experimentally using tunneling spectroscopy.",
author = "C. Padurariu and T. Jonckheere and J. Rech and T. Martin and D. Feinberg",
year = "2017",
month = "5",
day = "30",
doi = "10.1103/PhysRevB.95.205437",
language = "English",
volume = "95",
pages = "1--13",
journal = "Physical Review B (Condensed Matter and Materials Physics)",
issn = "2469-9950",
publisher = "American Physical Society",
number = "20",

}

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TY - JOUR

T1 - Tunable pseudogaps due to nonlocal coherent transport in voltage-biased three-terminal Josephson junctions

AU - Padurariu, C.

AU - Jonckheere, T.

AU - Rech, J.

AU - Martin, T.

AU - Feinberg, D.

PY - 2017/5/30

Y1 - 2017/5/30

N2 - We investigate the proximity effect in junctions between N=3 superconductors under commensurate voltage bias. The bias is chosen to highlight the role of transport processes that exchange multiple Cooper pairs coherently between more than two superconductors. Such nonlocal processes can be studied in the dc response, where local transport processes do not contribute. We focus on the proximity-induced normal density of states that we investigate in a wide parameter space. We reveal the presence of deep and highly tunable pseudogaps and other rich structures. These are due to a static proximity effect that is absent for N=2 and is sensitive to an emergent superconducting phase associated to nonlocal coherent transport. In comparison with results for N=2, we find similarities in the signature peaks of multiple Andreev reflections. We discuss the effect of electron-hole decoherence and of various types of junction asymmetries. Our predictions can be investigated experimentally using tunneling spectroscopy.

AB - We investigate the proximity effect in junctions between N=3 superconductors under commensurate voltage bias. The bias is chosen to highlight the role of transport processes that exchange multiple Cooper pairs coherently between more than two superconductors. Such nonlocal processes can be studied in the dc response, where local transport processes do not contribute. We focus on the proximity-induced normal density of states that we investigate in a wide parameter space. We reveal the presence of deep and highly tunable pseudogaps and other rich structures. These are due to a static proximity effect that is absent for N=2 and is sensitive to an emergent superconducting phase associated to nonlocal coherent transport. In comparison with results for N=2, we find similarities in the signature peaks of multiple Andreev reflections. We discuss the effect of electron-hole decoherence and of various types of junction asymmetries. Our predictions can be investigated experimentally using tunneling spectroscopy.

UR - http://www.scopus.com/inward/record.url?scp=85024130303&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.95.205437

DO - 10.1103/PhysRevB.95.205437

M3 - Article

VL - 95

SP - 1

EP - 13

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

SN - 2469-9950

IS - 20

M1 - 205437

ER -

ID: 14466999