Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz

Wang, H. B.; Wu, Peiheng; Chen, J.; Maeda, Kei‐ichiro; Yamashita, Tsutomu

doi:10.1063/1.1456555

Cited by 33 publications

(18 citation statements)

References 11 publications

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“…Patterning of a microbridge results in a nearly horizontal stack of junctions and the length of the microbridge corresponds to the number of junctions in series. Additionally, complex 2-D arrays, 3-D arrays and artificial shunted junctions with improved synchronization have been realized leading to components and performance required for applications, see Wang et al (2002Wang et al ( , 2003. This kind of array offers new possibilities for synchronization (Grib et al, 2006).…”

Section: Preparation and Performance Of Intrinsic Josephson Junctionsmentioning

confidence: 99%

High-T c Josephson junctions

Seidel

2011

High-Temperature Superconductors

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Section: Preparation and Performance Of Intrinsic Josephson Junctionsmentioning

confidence: 99%

High-T c Josephson junctions

Seidel

2011

High-Temperature Superconductors

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“…Tanabe have used the d-wave nature of the gap in analyzing the quasiparticle current characteristics in BSCCO IJJ's [3]. Also, many researchers have developed special techniques in fabricating BSCCO IJJ's for application as electronic devices; Latyshev have reported on the fabrication of BSCCO IJJ's of very small area from singlecrystal whiskers by using a double-sided ion-beam processing technique [4], and Wang have reported response at high-frequencies up to 2.5 THz for IJJ's that were developed by new double-side fabrication process [5], [6].…”

Section: Introductionmentioning

confidence: 98%

Temperature dependence of the low-frequency noise properties in Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub y/ intrinsic Josephson junctions

Saito

Ishida

Irie

et al. 2003

IEEE Trans. Appl. Supercond.

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We have measured the temperature dependence of the low-frequency noise properties across for mesa stacks of intrinsic Josephson junctions (IJJ's) in single crystals of Bi 2 Sr 2 CaCu 2 O (BSCCO) in the absence of an external magnetic field. The measured curves for noise spectrum density ( ) showed a 1 frequency dependence at temperatures in the range from 4.3 K to 150 K except 36 K. We estimated the magnitude of the ( ) by using Rogers and Buhrman's empirical theory and Machlup's formula. From the observed curves for ( ), we estimated a 1noise level for a BSCCO IJJ biased at a sub-gap voltage of approximately 10 5 m 2 , and this value was almost completely independent of temperature in the range between 4.3 K and 40 K. We also found that the values above were smaller by a factor of approximately 10 than those below . The value for the BSCCO IJJ is approximately two orders of magnitude greater than for an epitaxial NbN/MgO/NbN tunnel junction biased above-gap voltage. We consider that the observed variation in the noise level with temperature is not interpretable in terms of a magnetic origin and the 1 noise in a BSCCO IJJ may be somehow associated with stress or defects in the BiO and/or SrO layers act as tunnel barriers.Index Terms-1 noise, Bi 2 Sr 2 CaCu 2 O single crystals, intrinsic Josephson junctions, low-frequency noise.

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“…Conventional method to fabricate a Bi 2 Sr 2 -CaCu 2 O 8+x (BSCCO) stack is argon ion milling. There are several outstanding advantagements, such as fabrication of single IJJ [2] (SIJJ), double-side fabrication method [3] and controllable Bi 2 Sr 2 CaCu 2 O 8+x /Au contacts fabrication [4] . As ion beam etching (IBE) technology is common and successful, it can be used to fabricate IJJs for different purposes.…”

mentioning

confidence: 99%

Acid etching process for fabrication of Bi2Sr2CaCu2O8+x stack

Zhang

Chen

et al. 2007

CHINESE SCI BULL

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We adopted a new method, acid etching process, to fabricate the intrinsic Josephson junctions based on the Bi 2 Sr 2 CaCu 2 O 8+x single crystals. By soaking the crystals into the dilute hydrochloric acid, we fabricated a junction stack successfully, and meantime made the surrounding area insulated. A certain concentration of hydrochloric acid was used to maintain the roughness of the modified layer. The current-voltage characteristic was achieved through the four terminal measurement. We could control the junctions' number by changing the concentration and the soaking time. We also found that the thickness of the stack was equal to the average height of the insulation layer. Such a simple, convenient and controllable fabrication method with a high yield might widen the applications of the intrinsic Josephson junctions. acid etching process, intrinsic Josephson junction, concentration, four-terminal measurementSince the pioneering work of Kleiner et al. [1] , the intrinsic Josephson junctions (IJJs) have become a hot topic in high temperature superconductivity (HTS), and the technology for fabrication of IJJs has been founded and developed. Conventional method to fabricate a Bi 2 Sr 2 -CaCu 2 O 8+x (BSCCO) stack is argon ion milling. There are several outstanding advantagements, such as fabrication of single IJJ [2] (SIJJ), double-side fabrication method [3] and controllable Bi 2 Sr 2 CaCu 2 O 8+x /Au contacts fabrication [4] . As ion beam etching (IBE) technology is common and successful, it can be used to fabricate IJJs for different purposes. All the aforementioned methods have their own features, but the complicated process with a low output of good samples may restrict the application of IJJs. In this work, we adopted a new process to fabricate the BSCCO stack--acid etching process.

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Three-dimensional arrays of BiSrCaCuO-2212 intrinsic Josephson junctions and zero-crossing Shapiro steps at 760 GHz

Cited by 33 publications

References 11 publications

High-T c Josephson junctions

High-T c Josephson junctions

Temperature dependence of the low-frequency noise properties in Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub y/ intrinsic Josephson junctions

Acid etching process for fabrication of Bi2Sr2CaCu2O8+x stack

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