Characterization of ramp edge-geometry ag:yba2cu3o7-x/prba2cu 3o7-x/ ag:yba2cu3o7-x junctions and dc squids

Q. X. Jia; D. Reagor; X. D. Wu; C. Mombourquette; S. R. Foltyn

doi:10.1109/77.621956

Characterization of ramp edge-geometry ag:yba₂cu₃o_7-x/prba₂cu ₃o_7-x/ ag:yba₂cu₃o_7-x junctions and dc squids

Q. X. Jia
, D. Reagor
, X. D. Wu
, C. Mombourquette
, S. R. Foltyn

Department of Materials Design and Innovation

Los Alamos National Laboratory

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

3 Scopus citations

Abstract

High-temperature superconducting Josephson junctions and dc SQUIDs were fabricated using a ramp edge-geometry SNS configuration. Ag-doped YBajCujO. was used as electrodes and PrBazCu3O7.I as barrier. The ICR value of the junctions was in excess of 120 (iV at 75 K. The dc SQUIDs showed a flux modulation depth 9V/aî> over 150 nV/<D0 at 75K. The flux noise of the devices measured with dc bias currents operated at 75 K showed a 1/f dependence at low frequency having values below 100 noHz1/z (the best values in the range of 30-40 -4i<E>oHz1'2) at 1 Hz and less than 5 (i4>oHzt/2 in the white noise region. The voltage modulation and magnetic field noise were 37 -4V and ~2 pTHz1'2 at 1 kHz for the directlycoupled dc SQUID magnetometers (with a pick-up loop 6 mm x 3.5 mm) based on the ramp edgegeometry SNS configuration.

Original language	English
Pages (from-to)	3005-3008
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	7
Issue number	2 PART 3
DOIs	https://doi.org/10.1109/77.621956
State	Published - 1997

Access to Document

10.1109/77.621956

Cite this

@article{285ce209aaa54628a7463915cb7a67e2,

title = "Characterization of ramp edge-geometry ag:yba2cu3o7-x/prba2cu 3o7-x/ ag:yba2cu3o7-x junctions and dc squids",

abstract = "High-temperature superconducting Josephson junctions and dc SQUIDs were fabricated using a ramp edge-geometry SNS configuration. Ag-doped YBajCujO. was used as electrodes and PrBazCu3O7.I as barrier. The ICR value of the junctions was in excess of 120 (iV at 75 K. The dc SQUIDs showed a flux modulation depth 9V/a{\^i}> over 150 nV/oHz1'2) at 1 Hz and less than 5 (i4>oHzt/2 in the white noise region. The voltage modulation and magnetic field noise were 37 -4V and \textasciitilde{}2 pTHz1'2 at 1 kHz for the directlycoupled dc SQUID magnetometers (with a pick-up loop 6 mm x 3.5 mm) based on the ramp edgegeometry SNS configuration.",

author = "Jia, \{Q. X.\} and D. Reagor and Wu, \{X. D.\} and C. Mombourquette and Foltyn, \{S. R.\}",

year = "1997",

doi = "10.1109/77.621956",

language = "English",

volume = "7",

pages = "3005--3008",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2 PART 3",

}

TY - JOUR

T1 - Characterization of ramp edge-geometry ag:yba2cu3o7-x/prba2cu 3o7-x/ ag:yba2cu3o7-x junctions and dc squids

AU - Jia, Q. X.

AU - Reagor, D.

AU - Wu, X. D.

AU - Mombourquette, C.

AU - Foltyn, S. R.

PY - 1997

Y1 - 1997

N2 - High-temperature superconducting Josephson junctions and dc SQUIDs were fabricated using a ramp edge-geometry SNS configuration. Ag-doped YBajCujO. was used as electrodes and PrBazCu3O7.I as barrier. The ICR value of the junctions was in excess of 120 (iV at 75 K. The dc SQUIDs showed a flux modulation depth 9V/aî> over 150 nV/oHz1'2) at 1 Hz and less than 5 (i4>oHzt/2 in the white noise region. The voltage modulation and magnetic field noise were 37 -4V and ~2 pTHz1'2 at 1 kHz for the directlycoupled dc SQUID magnetometers (with a pick-up loop 6 mm x 3.5 mm) based on the ramp edgegeometry SNS configuration.

AB - High-temperature superconducting Josephson junctions and dc SQUIDs were fabricated using a ramp edge-geometry SNS configuration. Ag-doped YBajCujO. was used as electrodes and PrBazCu3O7.I as barrier. The ICR value of the junctions was in excess of 120 (iV at 75 K. The dc SQUIDs showed a flux modulation depth 9V/aî> over 150 nV/oHz1'2) at 1 Hz and less than 5 (i4>oHzt/2 in the white noise region. The voltage modulation and magnetic field noise were 37 -4V and ~2 pTHz1'2 at 1 kHz for the directlycoupled dc SQUID magnetometers (with a pick-up loop 6 mm x 3.5 mm) based on the ramp edgegeometry SNS configuration.

UR - https://www.scopus.com/pages/publications/0031170238

U2 - 10.1109/77.621956

DO - 10.1109/77.621956

M3 - Article

AN - SCOPUS:0031170238

SN - 1051-8223

VL - 7

SP - 3005

EP - 3008

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 PART 3

ER -

Characterization of ramp edge-geometry ag:yba₂cu₃o_7-x/prba₂cu ₃o_7-x/ ag:yba₂cu₃o_7-x junctions and dc squids

Abstract

Access to Document

Other files and links

Fingerprint

Cite this