Planar superconductor-normal-superconductor Josephson junctions in MgB2

G. Burnell; D. J. Kang; H. N. Lee; S. H. Moon; B. Oh; M. G. Blamire

doi:10.1063/1.1419041

Planar superconductor-normal-superconductor Josephson junctions in MgB₂

G. Burnell
, D. J. Kang
, H. N. Lee
, S. H. Moon
, B. Oh
, M. G. Blamire

University of Cambridge
LG Corporation

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

78 Scopus citations

Abstract

We report the successful creation of planar MgB₂ junctions by localized ion damage in thin (100 nm) films of MgB₂ on sapphire by milling a 50 nm trench with a focused-ion beam across tracks of widths between 1 and 5 μm. When the depth of the trench is between 70% and 80% of the film thickness, devices show critical currents (I_C) for temperatures below 25 K. The I_C of these devices is strongly modulated by applied microwave radiation and magnetic field. The product of the critical current and normal state resistance (I_CR_N) is remarkably high, implying a potential for very-high-frequency applications.

Original language	English
Pages (from-to)	3464-3466
Number of pages	3
Journal	Applied Physics Letters
Volume	79
Issue number	21
DOIs	https://doi.org/10.1063/1.1419041
State	Published - 19 Nov 2001
Externally published	Yes

Access to Document

10.1063/1.1419041

Cite this

@article{1cd890cb521748d0b8b1f6a1b4df67b7,

title = "Planar superconductor-normal-superconductor Josephson junctions in MgB2",

abstract = "We report the successful creation of planar MgB2 junctions by localized ion damage in thin (100 nm) films of MgB2 on sapphire by milling a 50 nm trench with a focused-ion beam across tracks of widths between 1 and 5 μm. When the depth of the trench is between 70\% and 80\% of the film thickness, devices show critical currents (IC) for temperatures below 25 K. The IC of these devices is strongly modulated by applied microwave radiation and magnetic field. The product of the critical current and normal state resistance (ICRN) is remarkably high, implying a potential for very-high-frequency applications.",

author = "G. Burnell and Kang, \{D. J.\} and Lee, \{H. N.\} and Moon, \{S. H.\} and B. Oh and Blamire, \{M. G.\}",

year = "2001",

month = nov,

day = "19",

doi = "10.1063/1.1419041",

language = "English",

volume = "79",

pages = "3464--3466",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "21",

}

TY - JOUR

T1 - Planar superconductor-normal-superconductor Josephson junctions in MgB2

AU - Burnell, G.

AU - Kang, D. J.

AU - Lee, H. N.

AU - Moon, S. H.

AU - Oh, B.

AU - Blamire, M. G.

PY - 2001/11/19

Y1 - 2001/11/19

N2 - We report the successful creation of planar MgB2 junctions by localized ion damage in thin (100 nm) films of MgB2 on sapphire by milling a 50 nm trench with a focused-ion beam across tracks of widths between 1 and 5 μm. When the depth of the trench is between 70% and 80% of the film thickness, devices show critical currents (IC) for temperatures below 25 K. The IC of these devices is strongly modulated by applied microwave radiation and magnetic field. The product of the critical current and normal state resistance (ICRN) is remarkably high, implying a potential for very-high-frequency applications.

AB - We report the successful creation of planar MgB2 junctions by localized ion damage in thin (100 nm) films of MgB2 on sapphire by milling a 50 nm trench with a focused-ion beam across tracks of widths between 1 and 5 μm. When the depth of the trench is between 70% and 80% of the film thickness, devices show critical currents (IC) for temperatures below 25 K. The IC of these devices is strongly modulated by applied microwave radiation and magnetic field. The product of the critical current and normal state resistance (ICRN) is remarkably high, implying a potential for very-high-frequency applications.

UR - https://www.scopus.com/pages/publications/0035914782

U2 - 10.1063/1.1419041

DO - 10.1063/1.1419041

M3 - Article

AN - SCOPUS:0035914782

SN - 0003-6951

VL - 79

SP - 3464

EP - 3466

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 21

ER -

Planar superconductor-normal-superconductor Josephson junctions in MgB₂

Abstract

Access to Document

Other files and links

Fingerprint

Cite this