Proximity effect in the superconducting magnetization of a Pb/Cu bilayer film with an antidot lattice

V. V. Metlushko; L. E. DeLong; V. V. Moshchalkov; Y. Bruynseraede

doi:10.1016/S0921-4534(03)00897-9

Proximity effect in the superconducting magnetization of a Pb/Cu bilayer film with an antidot lattice

V. V. Metlushko
, L. E. DeLong
, V. V. Moshchalkov
, Y. Bruynseraede

Physics And Astronomy

Producción científica: Article › revisión exhaustiva

7 Citas (Scopus)

Resumen

AC magnetization measurements are reported for a superconducting Pb (500 Å)/Cu (100 Å) film bilayer with a triangular lattice of antidots of diameter D = 0.35 μm and spacing d = 1.0 μm. Sharply peaked magnetization anomalies occur at applied DC magnetic fields H_n = nH₁, where 1≤n≤3, and H₁ = 24 Oe is the first "matching field" at which every antidot traps exactly one fundamental flux quantum Φ₀. The peaked nature of the matching anomalies is similar to the behavior of Josephson networks (having d/D ≈ 1), but differs from more step-like structures observed in the magnetization of other patterned films with d/D ≫ 1. The n = 3, 4 matching anomalies successively disappear when the applied field is tilted away from the bilayer normal by 70-84°. The peaked magnetization, low transition temperature of 6.70 K, reduced angular stability of the flux lattice, and the absence of clear matching anomalies with n > 4, indicate that these properties are novel probes of a proximity effect between normal (Cu) and superconducting (Pb) film layers.

Idioma original	English
Páginas (desde-hasta)	196-202
Número de páginas	7
Publicación	Physica C: Superconductivity and its Applications
Volumen	391
N.º	2
DOI	https://doi.org/10.1016/S0921-4534(03)00897-9
Estado	Published - ago 15 2003

Nota bibliográfica

Funding Information:
Research at the University of Kentucky was supported by US Department of Energy Grant #DE-FG02-97ER45653. Research at the Katholieke Universiteit Leuven was supported by the Flemish Fund for Scientific Research (FWO) and the Concerted Action (GOA) Programs. We thank Rik Jonckheere for the film mask fabrication, and Mr. Sergey Kryukov for help in manuscript preparation.

Financiación

Research at the University of Kentucky was supported by US Department of Energy Grant #DE-FG02-97ER45653. Research at the Katholieke Universiteit Leuven was supported by the Flemish Fund for Scientific Research (FWO) and the Concerted Action (GOA) Programs. We thank Rik Jonckheere for the film mask fabrication, and Mr. Sergey Kryukov for help in manuscript preparation.

Financiadores	Número del financiador
Flemish Fund for Scientific Research
US Department of Energy	-FG02-97ER45653
Fonds Wetenschappelijk Onderzoek

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Acceder al documento

10.1016/S0921-4534(03)00897-9

Otros archivos y enlaces

Citar esto

@article{c5fbb2d3f8bc456c847a50c07ca0b759,

title = "Proximity effect in the superconducting magnetization of a Pb/Cu bilayer film with an antidot lattice",

abstract = "AC magnetization measurements are reported for a superconducting Pb (500 {\AA})/Cu (100 {\AA}) film bilayer with a triangular lattice of antidots of diameter D = 0.35 μm and spacing d = 1.0 μm. Sharply peaked magnetization anomalies occur at applied DC magnetic fields Hn = nH1, where 1≤n≤3, and H1 = 24 Oe is the first {"}matching field{"} at which every antidot traps exactly one fundamental flux quantum Φ0. The peaked nature of the matching anomalies is similar to the behavior of Josephson networks (having d/D ≈ 1), but differs from more step-like structures observed in the magnetization of other patterned films with d/D ≫ 1. The n = 3, 4 matching anomalies successively disappear when the applied field is tilted away from the bilayer normal by 70-84°. The peaked magnetization, low transition temperature of 6.70 K, reduced angular stability of the flux lattice, and the absence of clear matching anomalies with n > 4, indicate that these properties are novel probes of a proximity effect between normal (Cu) and superconducting (Pb) film layers.",

keywords = "Antidot arrays, Flux pinning, Proximity effect, Superconducting thin films",

author = "Metlushko, \{V. V.\} and DeLong, \{L. E.\} and Moshchalkov, \{V. V.\} and Y. Bruynseraede",

note = "Funding Information: Research at the University of Kentucky was supported by US Department of Energy Grant \#DE-FG02-97ER45653. Research at the Katholieke Universiteit Leuven was supported by the Flemish Fund for Scientific Research (FWO) and the Concerted Action (GOA) Programs. We thank Rik Jonckheere for the film mask fabrication, and Mr. Sergey Kryukov for help in manuscript preparation. ",

year = "2003",

month = aug,

day = "15",

doi = "10.1016/S0921-4534(03)00897-9",

language = "English",

volume = "391",

pages = "196--202",

number = "2",

}

TY - JOUR

T1 - Proximity effect in the superconducting magnetization of a Pb/Cu bilayer film with an antidot lattice

AU - Metlushko, V. V.

AU - DeLong, L. E.

AU - Moshchalkov, V. V.

AU - Bruynseraede, Y.

N1 - Funding Information: Research at the University of Kentucky was supported by US Department of Energy Grant #DE-FG02-97ER45653. Research at the Katholieke Universiteit Leuven was supported by the Flemish Fund for Scientific Research (FWO) and the Concerted Action (GOA) Programs. We thank Rik Jonckheere for the film mask fabrication, and Mr. Sergey Kryukov for help in manuscript preparation.

PY - 2003/8/15

Y1 - 2003/8/15

N2 - AC magnetization measurements are reported for a superconducting Pb (500 Å)/Cu (100 Å) film bilayer with a triangular lattice of antidots of diameter D = 0.35 μm and spacing d = 1.0 μm. Sharply peaked magnetization anomalies occur at applied DC magnetic fields Hn = nH1, where 1≤n≤3, and H1 = 24 Oe is the first "matching field" at which every antidot traps exactly one fundamental flux quantum Φ0. The peaked nature of the matching anomalies is similar to the behavior of Josephson networks (having d/D ≈ 1), but differs from more step-like structures observed in the magnetization of other patterned films with d/D ≫ 1. The n = 3, 4 matching anomalies successively disappear when the applied field is tilted away from the bilayer normal by 70-84°. The peaked magnetization, low transition temperature of 6.70 K, reduced angular stability of the flux lattice, and the absence of clear matching anomalies with n > 4, indicate that these properties are novel probes of a proximity effect between normal (Cu) and superconducting (Pb) film layers.

AB - AC magnetization measurements are reported for a superconducting Pb (500 Å)/Cu (100 Å) film bilayer with a triangular lattice of antidots of diameter D = 0.35 μm and spacing d = 1.0 μm. Sharply peaked magnetization anomalies occur at applied DC magnetic fields Hn = nH1, where 1≤n≤3, and H1 = 24 Oe is the first "matching field" at which every antidot traps exactly one fundamental flux quantum Φ0. The peaked nature of the matching anomalies is similar to the behavior of Josephson networks (having d/D ≈ 1), but differs from more step-like structures observed in the magnetization of other patterned films with d/D ≫ 1. The n = 3, 4 matching anomalies successively disappear when the applied field is tilted away from the bilayer normal by 70-84°. The peaked magnetization, low transition temperature of 6.70 K, reduced angular stability of the flux lattice, and the absence of clear matching anomalies with n > 4, indicate that these properties are novel probes of a proximity effect between normal (Cu) and superconducting (Pb) film layers.

KW - Antidot arrays

KW - Flux pinning

KW - Proximity effect

KW - Superconducting thin films

UR - https://www.scopus.com/pages/publications/0038451488

UR - https://www.scopus.com/pages/publications/0038451488#tab=citedBy

U2 - 10.1016/S0921-4534(03)00897-9

DO - 10.1016/S0921-4534(03)00897-9

M3 - Article

AN - SCOPUS:0038451488

SN - 0921-4534

VL - 391

SP - 196

EP - 202

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 2

ER -

Proximity effect in the superconducting magnetization of a Pb/Cu bilayer film with an antidot lattice

Resumen

Nota bibliográfica

Financiación

ASJC Scopus subject areas

Acceder al documento

Otros archivos y enlaces

Huella

Citar esto