Abstract
The creation of sources of coherent emission in the terahertz region of frequencies from stacks of intrinsic Josephson junctions in high-temperature superconductors becomes the recently important problem of applied nanoscience. We investigated numerically IV-characteristics of stacks of three and four long Josephson junctions and power of emission from edges of the stack at different small Gaussian standard deviations of critical currents. We found the split zero-field steps in IV-characteristics. Positions of zero-field steps in the IV-curve can be described by a simple analytical expression in the theory of electrical properties of stacks of Josephson junctions placed in the external magnetic field. Maxima of coherent emission appear at voltages corresponding to the frequencies of the resonance of the in-phase collective modes of the whole stack with modes of geometrical resonances. We found maximal tolerant standard deviations of critical currents at which this resonance exists (from 1 to 10% of averaged critical currents of junctions).
Similar content being viewed by others
References
Barone A, Paternò G (1982) Physics and applications of the Josephson effect. Wiley, New York
Benseman TM et al (2013) Powerful terahertz emission from Bi2Sr2CaCu2O8 + δ mesa arrays. Appl Phys Lett 103:022602
Camerlingo C, Russo M, Vaglio R (1982) Zero-field “Fiske” steps in small Josephson junctions. J Appl Phys 53:7609
Cerkoney DP, Reid C, Doty CM, Gramajo A, Campbell TD, Morales MA, Delfanazari K, Tsujimoto M, Kashiwagi T, Yamamoto T, Watanabe C, Minami H, Kadowaki K, Klemm RA (2017) Cavity mode enhancement of terahertz emission from equilateral triangular microstrip antennas of the high-Tc superconductor Bi2Sr2CaCu2O8 + δ. J Phys Condens Matter 29:015601
Delfanazari K, Klemm RA, Tsujimoto M, Cerkoney DP, Yamamoto T, Kashiwagi T, Kadowaki K (2019) Cavity modes in broadly tunable superconducting coherent terahertz sources. J Phys Conf Ser 1182:012011
Grib A, Seidel P (2016) The coherent dynamic state of intrinsic Josephson junctions. IEEE Trans Appl Supercond 26:1801004
Grib A, Seidel P (2017) Resonant modes in a stack of intrinsic Josephson junctions. IEEE Trans Appl Supercond 27:1800604
Grib A, Seidel P, Tonouchi M (2017) Zero-field steps and coherent emission of externally heated long Josephson junctions. Supercond Sci Technol 30:014004
Grib A, Savich S, Vovk R, Shaternik V, Shapovalov A, Seidel P (2018) Electrical сharacteristics of long Josephson junctions based on Tungsten Nanorods as weak links: effect of random critical-current distributions. IEEE Trans Appl Supercond 28:1801106
Kalhor S, Ghanaatshoar M, Kashiwagi T, Kadowaki K, Kelly MJ, Delfanazari K (2017) Thermal tuning of high-Tc superconducting Bi2Sr2CaCu2O8 + δ terahertz metamaterial. IEEE Photonics J 9:1400308
Koshelev AE, Bulaevskii LN (2008) Resonant electromagnetic emission from intrinsic Josephson-junctionstacks with laterally modulated Josephson critical current. Phys Rev B 77:014530
Likharev KK (1986) Dynamics of Josephson junctions and circuits. Gordon and Breach, New York
Minami H, Watanabe C, Sato K, Sekimoto S, Yamamoto T, Kashiwagi T, Klemm RA, Kadowaki K (2014) Local SiC photoluminescence evidence of hot spot formation and sub-THz coherent emission from a rectangular Bi2Sr2CaCu2O8 + δ mesa. Phys Rev B 89:054503
Nakade K, Kashiwagi T, Saiwai Y, Minami H, Yamamoto T, Klemm RA, Kadowaki K (2016) Applications using high-Tc superconducting terahertz emitters. Sci Rep 6:23178
Ozyuzer L, Koshelev AE, Kurter C, Gopalsami N, Li Q, Tachiki M, Kadowaki K, Yamamoto T, Minami H, Yamaguchi H, Tachiki T, Gray KE, Kwok WK, Welp U (2007) Emission of coherent THz radiation from superconductors. Science 318:1291
Sakai S, Bodin P, Pedersen NF (1993) Fluxons in thin-film superconductor-insulator superlattices. J Appl Phys 73:2411
Sakai S, Ustinov AV, Kohlstedt H, Petraglia A, Pedersen NF (1994) Theory and experiment on electromagnetic-wave-propagation velocities in stacked superconducting tunnel structures. Phys Rev B 50:12905
Shibano Y, Kashiwagi T, Komori Y, Sakamoto K, Tanabe Y, Yamamoto T, Minami H, Klemm RA, Kadowaki K (2019) High-Tc superconducting THz emitters fabricated by wet etching. AIP Adv 9:015116
Zhang H, Wieland R, Chen W, Kizilaslan O, Ishida S, Han C, Tian W, Xu Z, Qi Z, Qing T, Lv Y, Zhou X, Kinev N, Ermakov AB, Dorsch E, Ziegele M, Koelle D, Eisaki H, Yoshida Y, Koshelets VP, Kleiner R, Wang H, Wu P (2019) Resonant cavity modes in Bi2Sr2CaCu2O8 + x intrinsic Josephson junction stacks. Phys Rev Appl 11:044004
Acknowledgements
This publication is based on the research provided by the grant support of the Ukrainian State Fund for Fundamental Research (project Ф76/36725 “Nanostructural superconducting heterostructures with hybrid barriers for the generation and the registration of the radiation in the subterhertz frequency range”).
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Grib, A., Vovk, R., Savich, S. et al. IV-characteristics and power of emission from stacks of long Josephson junctions with Gaussian spread of critical currents. Appl Nanosci 10, 2849–2854 (2020). https://doi.org/10.1007/s13204-020-01279-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13204-020-01279-0