Josephson effects in U-shaped YBa2Cu3O7-y microbridges

H. C. Yang; H. H. Sung; C. Y. Huang; H. E. Horng; Y. T. Lee; J. T. Lo

doi:10.1016/0921-4526(94)91386-2

Josephson effects in U-shaped YBa₂Cu₃O_7-y microbridges

H. C. Yang^*, H. H. Sung, C. Y. Huang, H. E. Horng, Y. T. Lee, J. T. Lo

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

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

Abstract

We have fabricated U-shape YBa₂Cu₃O_y high-T_c microbridges on SrTiO₃(001) substrates. The bridge is microprocessed by means of photolithography and wet etching. The fabricated configuration of the bridge is 20 μm wide, 10 μm long and 10 - 40 nm thick. Current-voltage curves show a hysteretic behavior. The junction capacitance is 0.57 pF and the I_cR_n product is 0.5 mV at 35 K. Shapiro steps are observed under microwave irradiation; voltage spikes are occasionally observed in current-voltage curves and are owing to the absence of the phase locking in the weak links.

Original language	English
Pages (from-to)	1773-1774
Number of pages	2
Journal	Physica B: Physics of Condensed Matter
Volume	194-196
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4526(94)91386-2
Publication status	Published - 1994 Feb 2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/0921-4526(94)91386-2

Cite this

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title = "Josephson effects in U-shaped YBa2Cu3O7-y microbridges",

abstract = "We have fabricated U-shape YBa2Cu3Oy high-Tc microbridges on SrTiO3(001) substrates. The bridge is microprocessed by means of photolithography and wet etching. The fabricated configuration of the bridge is 20 μm wide, 10 μm long and 10 - 40 nm thick. Current-voltage curves show a hysteretic behavior. The junction capacitance is 0.57 pF and the IcRn product is 0.5 mV at 35 K. Shapiro steps are observed under microwave irradiation; voltage spikes are occasionally observed in current-voltage curves and are owing to the absence of the phase locking in the weak links.",

author = "Yang, {H. C.} and Sung, {H. H.} and Huang, {C. Y.} and Horng, {H. E.} and Lee, {Y. T.} and Lo, {J. T.}",

note = "Funding Information: This work is supported by National Science Council of R.O.C. under Grant No. NSC81--0208-M002-54",

year = "1994",

month = feb,

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doi = "10.1016/0921-4526(94)91386-2",

language = "English",

volume = "194-196",

pages = "1773--1774",

journal = "Physica B: Physics of Condensed Matter",

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TY - JOUR

T1 - Josephson effects in U-shaped YBa2Cu3O7-y microbridges

AU - Yang, H. C.

AU - Sung, H. H.

AU - Huang, C. Y.

AU - Horng, H. E.

AU - Lee, Y. T.

AU - Lo, J. T.

N1 - Funding Information: This work is supported by National Science Council of R.O.C. under Grant No. NSC81--0208-M002-54

PY - 1994/2/2

Y1 - 1994/2/2

N2 - We have fabricated U-shape YBa2Cu3Oy high-Tc microbridges on SrTiO3(001) substrates. The bridge is microprocessed by means of photolithography and wet etching. The fabricated configuration of the bridge is 20 μm wide, 10 μm long and 10 - 40 nm thick. Current-voltage curves show a hysteretic behavior. The junction capacitance is 0.57 pF and the IcRn product is 0.5 mV at 35 K. Shapiro steps are observed under microwave irradiation; voltage spikes are occasionally observed in current-voltage curves and are owing to the absence of the phase locking in the weak links.

AB - We have fabricated U-shape YBa2Cu3Oy high-Tc microbridges on SrTiO3(001) substrates. The bridge is microprocessed by means of photolithography and wet etching. The fabricated configuration of the bridge is 20 μm wide, 10 μm long and 10 - 40 nm thick. Current-voltage curves show a hysteretic behavior. The junction capacitance is 0.57 pF and the IcRn product is 0.5 mV at 35 K. Shapiro steps are observed under microwave irradiation; voltage spikes are occasionally observed in current-voltage curves and are owing to the absence of the phase locking in the weak links.

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U2 - 10.1016/0921-4526(94)91386-2

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VL - 194-196

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JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

IS - PART 2

ER -

Josephson effects in U-shaped YBa₂Cu₃O_7-y microbridges

Abstract

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