Investigation of Terahertz Emission Phenomena of High-Tc Superconductors

• Murakami Hironaru

  Institute of Laser Engineering, Osaka University

• Tominari Yukihiro

  Institute of Laser Engineering, Osaka University

• Tonouchi Masayoshi

  Institute of Laser Engineering, Osaka University

• Uchiyama Tetsuji

  Department of Physics, Tokyo Institute of Technology

• Iguchi Ienari

  Department of Physics, Tokyo Institute of Technology

• Wang Zhen

  Kansai Advanced Research Center

Bibliographic Information

Other Title

• Investigation of Terahertz Emission Phenomena of High-T_c Superconductors

Abstract

The c-axis transmission spectra of underdoped Bi₂Sr₂CaCu₂O_8+δ (BSCCO) and YBa₂Cu₃O_7−δ (YBCO) thin films were measured in the frequency range from 0.1 to 1.5 THz to investigate the mechanism of terahertz (THz)-pulse emission from high-T_C superconductors (HTSs). The transmission spectra showed different properties depending on both the kind and hole-doping level of HTS thin film. A relatively strong shielding effect was observed for THz waves below the characteristic frequency f₀, which almost corresponds to the cutoff frequency f_c in the THz-wave radiation spectrum. The observed THz-pulse transmission and emission properties are explained by the intrinsic anisotropic characteristic peculiar to each HTS sample. Particularly, the magnitude of the superconducting order parameter that is induced in the insulating barrier layer between CuO₂ double layers plays an important role in determining the cutoff frequency f_c.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 44 (5A), 2998-3001, 2005

  The Japan Society of Applied Physics

Keywords

• THz pulse
• high-<I>T</I><SUB>C</SUB> superconductor
• femtosecond laser
• radiation
• superconducting order parameter

Details

• CRID: 1390001206263917824
• NII Article ID: 210000057880
• NII Article ID: 10015706348
• NII Article ID: 130004533973
• NII Book ID: AA10457675
• DOI: 10.1143/jjap.44.2998
• ISSN: 13474065
• ISSN: 00214922
• NDL BIB ID: 7311172
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7311172
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.2998
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.44.2998/pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed