Response of high-temperature superconductors to electromagnetic radiation: (A Review)

The work describes the capabilities of Laser Scanning Microscopy (LSM) as a spatiallyresolved method of testing high-T c materials and devices. The earlier results obtained by the authors are briefly reviewed. Some novel applications of the LSM are illustrated, including imaging the HTS responses in rf mode, probing the superconducting properties of HTS single crystals, development of two-beam laser scanning microscopy. The existence of the phase slip lines mechanism of resistivity in HTS materials is proven by LSM imaging.

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“…The question of the mechanisms of generation of PR(x,y) in HTSs is considered in a number of review papers, e.g. [29][30][31][32][33].…”

Section: Voltage Contrastmentioning

confidence: 99%

Laser scanning microscopy of HTS films and devices (Review Article)

Zhuravel

Sivakov

Турутанов

et al. 2006

Low Temperature Physics

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Photoresponse ofYBa2Cu3O7−δ<

Landau

Ott

2000

Phys. Rev. B

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Modelling the nonlinear high-frequency response of a short Josephson junction under two-frequency irradiation

Velichko

Porch²

1999

IEEE Trans. Appl. Supercond.

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The nonlinear response of a short Josephson Junction (JJ), being irradiated simultaneously with two high-frequency signals, has been studied in the framework of the nonlinear Resistively-Shunted Junction (RSJ) Model. One of the signals, hereafter referred to as "probe signal", has a small amplitude Ipr < Ic (Ic is the critical current of the JJ) and frequency fpr, and is used to monitor the response of the junction to the other high-power signal with amplitude Ipm and frequency fpm, hereafter referred to as "pump signal". Varying the frequency ratio fpm/fpr from 0.5 to 100, and the current amplitude of the probe signal from 0.01 to 0.9 of Ic, we found that the dependence of the junction impedance at the frequency fpr, Z fpr s , versus Ipm preserves its general features, independent of fpm/fpr and Ipr/Ic values. At the same time, some particular features, like negative values of Re(Z fpr s ) and "fine" structure of the steps in Z fpr s (Ipm) are observed for fpm/fpr < 1 and for particular values of Ipr/Ic. In general, the behavior of Z fpr s (Ipm) is rather different from that predicted by the nonlinear RSJ model for a short JJ in the regime of single-frequency irradiation, when one and the same signal plays the roles of the pump and the probe signals simultaneously. Possible applications of the model are briefly discussed.

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Response of high-temperature superconductors to electromagnetic radiation: (A Review)

Cited by 5 publications

References 79 publications

Laser scanning microscopy of HTS films and devices (Review Article)

Laser scanning microscopy of HTS films and devices (Review Article)

Photoresponse ofYBa2Cu3O7−δ<

Modelling the nonlinear high-frequency response of a short Josephson junction under two-frequency irradiation

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