Quasiparticle excitation in a superconducting tunnel junction by<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>α</mml:mi></mml:math>particles

Kurakado, M.; Mazaki, Hiromasa

doi:10.1103/physrevb.22.168

Cited by 44 publications

(7 citation statements)

References 10 publications

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“…A potentially much more sensitive and accurate method of detecting quasiparticles is to make them tunnel through an insulating barrier between two superconductors (SIS junctions). This method has been stud ied fo r some time (155)(156)(157). Very encouraging results were recently obtained by Twerenbold & Zehnder at SIN (158, 159) and the von Fe1itzch group in Munich (160).…”

Section: Quasiparticle De Tectorsmentioning

confidence: 82%

Detection of Cosmic Dark Matter

Primack¹,

Seckel²,

Sadoulet³

1988

Annu. Rev. Nucl. Part. Sci.

446

235

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Section: Quasiparticle De Tectorsmentioning

confidence: 82%

Detection of Cosmic Dark Matter

Primack¹,

Seckel²,

Sadoulet³

1988

Annu. Rev. Nucl. Part. Sci.

446

235

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“…As shown in Fig. 4, the V is therefore given by V5=(Q-nQ')/C (6) =Q'/C'. (7) From these equations, we obtain V5Q/(C+nC').…”

Section: Effective Capacitance Ceffmentioning

confidence: 98%

<title>X-ray detection with an Nb-based junction and investigation of series-junction detectors</title>

et al. 1992

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Two topics on our recent investigations into superconducting tunnel junction (STJ) detectors are discussed: the single Nb/A1.AlOx/Al/Nb junction for high-resolution x-ray detection and the series-connected superconducting tunnel junction detectors (SCSDs) with high detection efficiency. Using a single Nb/AlAlOx/Al/Nb junction with rather large area of 178 x 178 2, we obtained a high energy resolution of 88 eV for 5.9-keY x-rays. The signal-to-noise ratio of the SCSD is discussed from a simple theoretical formulation of electronics, showing that the series-connected STJs can developed as a nuclear radiation detector both with high energy resolution and high efficiency. Recent experimental results of our SCSD are also given in this paper.

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“…Moreover, under the bias condition, the changes in flows of electric current due to electron-like quasi-particles and hole-like quasiparticles excited in the same electrode compensate each other, have a signal charge hardly appears. 14 The gap energies of metal superconductors are of the order of 1 meV, hence the limit of energy resolution due to the statistical fluctuation of the number of excited quasiparticles in a superconductor can be much smaller than those of semiconductors. Small gap energies, however, are necessary but not sufficient for small ε values.…”

Section: Superconducting Tunnel Junctionmentioning

confidence: 99%

An introduction to superconducting tunnel junction detectors

Kurakado¹

2000

X-Ray Spectrom.

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Superconducting tunnel junction (STJ) detectors have potential as ultra‐high‐energy resolution detectors. Recently, single‐junction detectors, where radiation is directly absorbed and detected by an STJ, have shown much higher energy resolutions than semiconductor detectors even at high count rates of over 104 counts per second, e.g. resolutions of 12 eV for 5.9 keV x‐rays, 6 eV for 277 eV x‐rays and 0.2 eV for 2 eV optical photons. The energy resolutions of series‐junction detectors, where radiation is absorbed by a single‐crystal substrate and the resulting non‐thermal phonons are detected by STJs connected in series on the substrate, are not yet better than those of semiconductor detectors but are improving rapidly. This paper briefly introduces some principles of STJ detectors and reviews their recent developments. Copyright © 2000 John Wiley & Sons, Ltd.

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Quasiparticle excitation in a superconducting tunnel junction byαparticles

Cited by 44 publications

References 10 publications

Detection of Cosmic Dark Matter

Detection of Cosmic Dark Matter

<title>X-ray detection with an Nb-based junction and investigation of series-junction detectors</title>

An introduction to superconducting tunnel junction detectors

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