Submillimeter wave response of a high <i>T</i>
                  <i>c</i> superconducting microbridge

Takeya, J.; Kawate, Etsuo; Park, Chan Hoon; Goto, Takaaki

doi:10.1063/1.108140

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…At 5 K, the 6th step at 2.2 mV was clearly present, corresponding to a Josephson oscillation above 1 THz. Only few studies on high-To junctions are found in the literature that demonstrate the AC Josephson effect up to such high voltages [1][2][3]. These studies were mainly performed with poorly reproducible devices, like point contacts [ 1 ] or thin-film bridges containing several grain-boundary junctions [2,3 ].…”

Section: Resultsmentioning

confidence: 99%

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Observation of the AC Josephson effect up to THz frequencies in YBCO/PBCO/YBCO ramp-type Josephson junctions

Terpstra

Rijnders

Roesthuis

et al. 1993

Physica C: Superconductivity

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We present the response to 100 GHz irradiation of high-To Josephson junction devices for mixer/detector applications in the (sub-) mm wave range. These devices consist of a YBCO/PBCO/YBCO ramp-type junction combined with a planar logarithmic periodic antenna. The critical current and the t'h-st two Shapiro steps modulate with 100 GHz power according to the resistively shunted junction (RSJ) model. At l0 K clear Shapiro steps have been observed up to a voltage of about 7.5 inV. This corresponds to phase lockin~ of 3.6 THz AC Josephson oscillations by the 36th harmonic of the 100 GHz signal. The number of observed steps is currently limited by the available power, but they are present up to voltages strongly exceeding the l~Rn product of the junction at all temperatures.

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Section: Resultsmentioning

confidence: 99%

“…refs. [1][2][3]. Since most high-T¢ Josephson junctions suffer from a strong reduction of the I~Rn product as compared to the theoretical value, the question arises whether their high-frequency response is cut off at voltages above the gap voltage, as in SIS tunnel junctions [4], or already at voltages just above the l~Rn product.…”

Section: Introductionmentioning

confidence: 99%

Observation of the AC Josephson effect up to THz frequencies in YBCO/PBCO/YBCO ramp-type Josephson junctions

Terpstra

Rijnders

Roesthuis

et al. 1993

Physica C: Superconductivity

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show abstract

Deposition by plasma-assisted laser ablation and maskless patterning of YBa2Cu3O7−x superconducting thin films

et al. 1994

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Response of YBCO/PBCO/YBCO ramp type Josephson junctions to near mm wave irradiation

Terpstra

Gerritsma

Rogalla

et al. 1994

Physica B: Condensed Matter

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A high T¢ Josephson device for high frequency detection applications is being developed, consisting of an Y13CO/P13CO/Y13CO ramp type junction and a broad band log-periodic antenna. In this contribution we present the response of such a device to (near) mm wave irradiation. Shapiro steps have been observed up to very high voltage values -nearly 4 mV at 10 K, at the maximum of the radiation power. The modulation of the step amplitudes shows very good resemblence with the predictions from the Resistively Shunted Junction model.

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Submillimeter wave response of a high T c superconducting microbridge

Abstract: Articles you may be interested inSurface morphology effect on the photoresponse of high temperature superconducting microbridges

Cited by 6 publications

References 7 publications

Observation of the AC Josephson effect up to THz frequencies in YBCO/PBCO/YBCO ramp-type Josephson junctions

Observation of the AC Josephson effect up to THz frequencies in YBCO/PBCO/YBCO ramp-type Josephson junctions

Deposition by plasma-assisted laser ablation and maskless patterning of YBa2Cu3O7−x superconducting thin films

Response of YBCO/PBCO/YBCO ramp type Josephson junctions to near mm wave irradiation

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