Properties of YBaCuO nanobridges and dc-SQUIDs

Maxim V. Pedyash; David H.A. Blank; Jeroen H. de Muijnck; Horst Rogalla

doi:10.1109/77.621810

Properties of YBaCuO nanobridges and dc-SQUIDs

Maxim V. Pedyash, David H.A. Blank, Jeroen H. de Muijnck, Horst Rogalla

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Abstract

YBaCuO nanobridges and inductively shunted dc-SQUIDs have been patterned by direct Focused Ion Beam milling. Nanobridges manifest true Josephson effect, which can be explained by coherent motion of Abrikosov vortices in the bridge. An enhancement of this effect is proposed to be due to local suppression of the superconducting properties within the nanobridge area. This leads to a transition from SNS to SS'S type behavior of the nanobridge with decreasing temperature. Temperature dependence of the critical current, dynamic resistance, and SQUID voltage-flux modulation is discussed. The flux noise level of the nanoSQUID is measured to be about 6.5 μΦ0/√Hz at 62.7 K.

Original language	English
Pages (from-to)	2764-2767
Number of pages	4
Journal	IEEE transactions on applied superconductivity
Volume	7
Issue number	2
DOIs	https://doi.org/10.1109/77.621810
Publication status	Published - 1997
Event	1996 Applied Superconductivity Conference, ASC 1996 - David L. Lawrence Convention Center, Pittsburgh, United States Duration: 25 Aug 1996 → 30 Aug 1996

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title = "Properties of YBaCuO nanobridges and dc-SQUIDs",

abstract = "YBaCuO nanobridges and inductively shunted dc-SQUIDs have been patterned by direct Focused Ion Beam milling. Nanobridges manifest true Josephson effect, which can be explained by coherent motion of Abrikosov vortices in the bridge. An enhancement of this effect is proposed to be due to local suppression of the superconducting properties within the nanobridge area. This leads to a transition from SNS to SS'S type behavior of the nanobridge with decreasing temperature. Temperature dependence of the critical current, dynamic resistance, and SQUID voltage-flux modulation is discussed. The flux noise level of the nanoSQUID is measured to be about 6.5 μΦ0/√Hz at 62.7 K.",

author = "Pedyash, {Maxim V.} and Blank, {David H.A.} and {de Muijnck}, {Jeroen H.} and Horst Rogalla",

year = "1997",

doi = "10.1109/77.621810",

language = "English",

volume = "7",

pages = "2764--2767",

journal = "IEEE transactions on applied superconductivity",

issn = "1051-8223",

publisher = "IEEE",

number = "2",

note = "1996 Applied Superconductivity Conference, ASC 1996, ASC ; Conference date: 25-08-1996 Through 30-08-1996",

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T1 - Properties of YBaCuO nanobridges and dc-SQUIDs

AU - Pedyash, Maxim V.

AU - Blank, David H.A.

AU - de Muijnck, Jeroen H.

AU - Rogalla, Horst

PY - 1997

Y1 - 1997

N2 - YBaCuO nanobridges and inductively shunted dc-SQUIDs have been patterned by direct Focused Ion Beam milling. Nanobridges manifest true Josephson effect, which can be explained by coherent motion of Abrikosov vortices in the bridge. An enhancement of this effect is proposed to be due to local suppression of the superconducting properties within the nanobridge area. This leads to a transition from SNS to SS'S type behavior of the nanobridge with decreasing temperature. Temperature dependence of the critical current, dynamic resistance, and SQUID voltage-flux modulation is discussed. The flux noise level of the nanoSQUID is measured to be about 6.5 μΦ0/√Hz at 62.7 K.

AB - YBaCuO nanobridges and inductively shunted dc-SQUIDs have been patterned by direct Focused Ion Beam milling. Nanobridges manifest true Josephson effect, which can be explained by coherent motion of Abrikosov vortices in the bridge. An enhancement of this effect is proposed to be due to local suppression of the superconducting properties within the nanobridge area. This leads to a transition from SNS to SS'S type behavior of the nanobridge with decreasing temperature. Temperature dependence of the critical current, dynamic resistance, and SQUID voltage-flux modulation is discussed. The flux noise level of the nanoSQUID is measured to be about 6.5 μΦ0/√Hz at 62.7 K.

U2 - 10.1109/77.621810

DO - 10.1109/77.621810

M3 - Article

SN - 1051-8223

VL - 7

SP - 2764

EP - 2767

JO - IEEE transactions on applied superconductivity

JF - IEEE transactions on applied superconductivity

IS - 2

T2 - 1996 Applied Superconductivity Conference, ASC 1996

Y2 - 25 August 1996 through 30 August 1996

ER -

Properties of YBaCuO nanobridges and dc-SQUIDs

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