Manifestation of π-contacts in magnetic field dependence of I - V characteristics for proximity-type 2D Josephson junction array

V. A.G. Rivera; S. Sergeenkov; E. Marega; F. M. Araújo-Moreira

doi:10.1016/j.physleta.2009.11.010

Manifestation of π-contacts in magnetic field dependence of I - V characteristics for proximity-type 2D Josephson junction array

V. A.G. Rivera, S. Sergeenkov, E. Marega, F. M. Araújo-Moreira

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

4 Scopus citations

Abstract

Results on the temperature and magnetic field dependence of current-voltage characteristics (CVC) are presented for SNS-type 2D ordered array of Nb-Cu_0.95Al_0.05-Nb junctions. The critical current I_C (T, H) and the power exponent a (T, H) = 1 + Φ₀ I_C (T, H) / 2 k_B T of the nonlinear CVC law V = R [I - I_C (T, H)]^{a (T, H)} are found to have a maximum at non-zero value of applied magnetic field H_p = 225 Oe, which is attributed to manifestation of π-type Josephson contacts in our sample.

Original language	English
Pages (from-to)	376-379
Number of pages	4
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	374
Issue number	2
DOIs	https://doi.org/10.1016/j.physleta.2009.11.010
State	Published - 28 Dec 2009
Externally published	Yes

Bibliographical note

Funding Information:
We are very grateful to R.S. Newrock, P. Barbara and C.J. Lobb for helpful discussions and for providing SNS samples. This work has been financially supported by the Brazilian agencies CNPq, CAPES and FAPESP.

Keywords

Current-voltage characteristics
Josephson junction arrays
Proximity effect
π-type Josephson contacts

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10.1016/j.physleta.2009.11.010

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title = "Manifestation of π-contacts in magnetic field dependence of I - V characteristics for proximity-type 2D Josephson junction array",

abstract = "Results on the temperature and magnetic field dependence of current-voltage characteristics (CVC) are presented for SNS-type 2D ordered array of Nb-Cu0.95Al0.05-Nb junctions. The critical current IC (T, H) and the power exponent a (T, H) = 1 + Φ0 IC (T, H) / 2 kB T of the nonlinear CVC law V = R [I - IC (T, H)]a (T, H) are found to have a maximum at non-zero value of applied magnetic field Hp = 225 Oe, which is attributed to manifestation of π-type Josephson contacts in our sample.",

keywords = "Current-voltage characteristics, Josephson junction arrays, Proximity effect, π-type Josephson contacts",

author = "Rivera, {V. A.G.} and S. Sergeenkov and E. Marega and Ara{\'u}jo-Moreira, {F. M.}",

note = "Funding Information: We are very grateful to R.S. Newrock, P. Barbara and C.J. Lobb for helpful discussions and for providing SNS samples. This work has been financially supported by the Brazilian agencies CNPq, CAPES and FAPESP.",

year = "2009",

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doi = "10.1016/j.physleta.2009.11.010",

language = "Ingl{\'e}s",

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TY - JOUR

T1 - Manifestation of π-contacts in magnetic field dependence of I - V characteristics for proximity-type 2D Josephson junction array

AU - Rivera, V. A.G.

AU - Sergeenkov, S.

AU - Marega, E.

AU - Araújo-Moreira, F. M.

N1 - Funding Information: We are very grateful to R.S. Newrock, P. Barbara and C.J. Lobb for helpful discussions and for providing SNS samples. This work has been financially supported by the Brazilian agencies CNPq, CAPES and FAPESP.

PY - 2009/12/28

Y1 - 2009/12/28

N2 - Results on the temperature and magnetic field dependence of current-voltage characteristics (CVC) are presented for SNS-type 2D ordered array of Nb-Cu0.95Al0.05-Nb junctions. The critical current IC (T, H) and the power exponent a (T, H) = 1 + Φ0 IC (T, H) / 2 kB T of the nonlinear CVC law V = R [I - IC (T, H)]a (T, H) are found to have a maximum at non-zero value of applied magnetic field Hp = 225 Oe, which is attributed to manifestation of π-type Josephson contacts in our sample.

AB - Results on the temperature and magnetic field dependence of current-voltage characteristics (CVC) are presented for SNS-type 2D ordered array of Nb-Cu0.95Al0.05-Nb junctions. The critical current IC (T, H) and the power exponent a (T, H) = 1 + Φ0 IC (T, H) / 2 kB T of the nonlinear CVC law V = R [I - IC (T, H)]a (T, H) are found to have a maximum at non-zero value of applied magnetic field Hp = 225 Oe, which is attributed to manifestation of π-type Josephson contacts in our sample.

KW - Current-voltage characteristics

KW - Josephson junction arrays

KW - Proximity effect

KW - π-type Josephson contacts

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U2 - 10.1016/j.physleta.2009.11.010

DO - 10.1016/j.physleta.2009.11.010

M3 - Artículo

AN - SCOPUS:72149117111

SN - 0375-9601

VL - 374

SP - 376

EP - 379

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 2

ER -

Manifestation of π-contacts in magnetic field dependence of I - V characteristics for proximity-type 2D Josephson junction array

Abstract

Bibliographical note

Keywords

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