Sub-micron thin film intrinsic Josephson junctions

PA Warburton; AR Kuzhakhmetov; C Bell; G Burnell; MG Blamire; H Wu; CRM Grovenor; H Schneidewind; Chris Bell

doi:10.1109/TASC.2003.814056

Sub-micron thin film intrinsic Josephson junctions

PA Warburton^*, AR Kuzhakhmetov, C Bell, G Burnell, MG Blamire, H Wu, CRM Grovenor, H Schneidewind, Chris Bell

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

10 Citations (Scopus)

Abstract

We have fabricated sub-micron intrinsic Josephson junctions in thin films of Tl-Ba-Ca-Cu-O using two differing techniques suited to different applications. By using lateral focussed ion-beam milling we have created arrays of intrinsic junctions in c-axis oriented films. Such arrays, with areas as low as 0.25 mum(2), display large hysteresis comparable to that observed in single-crystal intrinsic junctions. By using normal focussed ion-beam milling we have created arrays in mis-aligned films grown on vicinal substrates. In arrays of area less than 0.4 mum(2) we observe Josephson phase diffusion and a suppressed critical current, showing that charging effects may be significant in these junctions.

Original language	English
Pages (from-to)	821-824
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2003.814056
Publication status	Published - Jun 2003
Event	Applied Superconductivity Conference - HOUSTON, United Kingdom Duration: 4 Aug 2002 → 9 Aug 2002

Keywords

focussed ion-beam milling
Josephson junctions
nanofabrication
BI2SR2CACU2O8+DELTA
FABRICATION

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title = "Sub-micron thin film intrinsic Josephson junctions",

abstract = "We have fabricated sub-micron intrinsic Josephson junctions in thin films of Tl-Ba-Ca-Cu-O using two differing techniques suited to different applications. By using lateral focussed ion-beam milling we have created arrays of intrinsic junctions in c-axis oriented films. Such arrays, with areas as low as 0.25 mum(2), display large hysteresis comparable to that observed in single-crystal intrinsic junctions. By using normal focussed ion-beam milling we have created arrays in mis-aligned films grown on vicinal substrates. In arrays of area less than 0.4 mum(2) we observe Josephson phase diffusion and a suppressed critical current, showing that charging effects may be significant in these junctions.",

keywords = "focussed ion-beam milling, Josephson junctions, nanofabrication, BI2SR2CACU2O8+DELTA, FABRICATION",

author = "PA Warburton and AR Kuzhakhmetov and C Bell and G Burnell and MG Blamire and H Wu and CRM Grovenor and H Schneidewind and Chris Bell",

year = "2003",

month = jun,

doi = "10.1109/TASC.2003.814056",

language = "English",

volume = "13",

pages = "821--824",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

number = "2",

note = "Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

}

TY - JOUR

T1 - Sub-micron thin film intrinsic Josephson junctions

AU - Warburton, PA

AU - Kuzhakhmetov, AR

AU - Bell, C

AU - Burnell, G

AU - Blamire, MG

AU - Wu, H

AU - Grovenor, CRM

AU - Schneidewind, H

AU - Bell, Chris

PY - 2003/6

Y1 - 2003/6

N2 - We have fabricated sub-micron intrinsic Josephson junctions in thin films of Tl-Ba-Ca-Cu-O using two differing techniques suited to different applications. By using lateral focussed ion-beam milling we have created arrays of intrinsic junctions in c-axis oriented films. Such arrays, with areas as low as 0.25 mum(2), display large hysteresis comparable to that observed in single-crystal intrinsic junctions. By using normal focussed ion-beam milling we have created arrays in mis-aligned films grown on vicinal substrates. In arrays of area less than 0.4 mum(2) we observe Josephson phase diffusion and a suppressed critical current, showing that charging effects may be significant in these junctions.

AB - We have fabricated sub-micron intrinsic Josephson junctions in thin films of Tl-Ba-Ca-Cu-O using two differing techniques suited to different applications. By using lateral focussed ion-beam milling we have created arrays of intrinsic junctions in c-axis oriented films. Such arrays, with areas as low as 0.25 mum(2), display large hysteresis comparable to that observed in single-crystal intrinsic junctions. By using normal focussed ion-beam milling we have created arrays in mis-aligned films grown on vicinal substrates. In arrays of area less than 0.4 mum(2) we observe Josephson phase diffusion and a suppressed critical current, showing that charging effects may be significant in these junctions.

KW - focussed ion-beam milling

KW - Josephson junctions

KW - nanofabrication

KW - BI2SR2CACU2O8+DELTA

KW - FABRICATION

U2 - 10.1109/TASC.2003.814056

DO - 10.1109/TASC.2003.814056

M3 - Article (Academic Journal)

VL - 13

SP - 821

EP - 824

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 2

T2 - Applied Superconductivity Conference

Y2 - 4 August 2002 through 9 August 2002

ER -

Sub-micron thin film intrinsic Josephson junctions

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Keywords

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