Field induced KosterlitzThouless transition in two-dimensional array of Nb- AlOx-Nb Josephson junctions

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

doi:10.1016/j.ssc.2011.03.033

Field induced KosterlitzThouless transition in two-dimensional array of Nb- AlO_x-Nb Josephson junctions

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

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

1 Scopus citations

Abstract

We present recent results on the magnetic field dependence of currentvoltage characteristics (CVC) for an artificially prepared two-dimensional array of unshunted NbAlO_xNb Josephson junctions. The results obtained from the measured CVC and critical current ^IC(T,H) differential magnetoresistance (DMR) R(T,H)=[dVdI]I=^IC(T,H) of the array are found to exhibit behavior compatible with field induced KosterlitzThouless transition describing unbinding of vortexantivortex pairs under applied magnetic field.

Original language	English
Pages (from-to)	892-894
Number of pages	3
Journal	Solid State Communications
Volume	151
Issue number	12
DOIs	https://doi.org/10.1016/j.ssc.2011.03.033
State	Published - Jun 2011
Externally published	Yes

Bibliographical note

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

Keywords

D. Currentvoltage characteristics
D. Differential magnetoresistance
D. Josephson junction arrays
D. KosterlitzThouless transition

Access to Document

10.1016/j.ssc.2011.03.033

Cite this

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title = "Field induced KosterlitzThouless transition in two-dimensional array of Nb- AlOx-Nb Josephson junctions",

abstract = "We present recent results on the magnetic field dependence of currentvoltage characteristics (CVC) for an artificially prepared two-dimensional array of unshunted NbAlOxNb Josephson junctions. The results obtained from the measured CVC and critical current IC(T,H) differential magnetoresistance (DMR) R(T,H)=[dVdI]I=IC(T,H) of the array are found to exhibit behavior compatible with field induced KosterlitzThouless transition describing unbinding of vortexantivortex pairs under applied magnetic field.",

keywords = "D. Currentvoltage characteristics, D. Differential magnetoresistance, D. Josephson junction arrays, D. KosterlitzThouless transition",

author = "S. Sergeenkov and Rivera, {V. A.G.} and E. Marega and Araujo-Moreira, {F. M.}",

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

year = "2011",

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volume = "151",

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journal = "Solid State Communications",

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T1 - Field induced KosterlitzThouless transition in two-dimensional array of Nb- AlOx-Nb Josephson junctions

AU - Sergeenkov, S.

AU - Rivera, V. A.G.

AU - Marega, E.

AU - Araujo-Moreira, F. M.

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

PY - 2011/6

Y1 - 2011/6

N2 - We present recent results on the magnetic field dependence of currentvoltage characteristics (CVC) for an artificially prepared two-dimensional array of unshunted NbAlOxNb Josephson junctions. The results obtained from the measured CVC and critical current IC(T,H) differential magnetoresistance (DMR) R(T,H)=[dVdI]I=IC(T,H) of the array are found to exhibit behavior compatible with field induced KosterlitzThouless transition describing unbinding of vortexantivortex pairs under applied magnetic field.

AB - We present recent results on the magnetic field dependence of currentvoltage characteristics (CVC) for an artificially prepared two-dimensional array of unshunted NbAlOxNb Josephson junctions. The results obtained from the measured CVC and critical current IC(T,H) differential magnetoresistance (DMR) R(T,H)=[dVdI]I=IC(T,H) of the array are found to exhibit behavior compatible with field induced KosterlitzThouless transition describing unbinding of vortexantivortex pairs under applied magnetic field.

KW - D. Currentvoltage characteristics

KW - D. Differential magnetoresistance

KW - D. Josephson junction arrays

KW - D. KosterlitzThouless transition

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DO - 10.1016/j.ssc.2011.03.033

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