Terahetz BWO spectroscopy of conductors and superconductors

B. P. Gorshunov, A. A. Volkov, A. S. Prokhorov, I. E. Spektor, J. Akimitsu, M. Dressel, G. J. Nieuwenhuys, S. Tomić, S. Uchida

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Methods for direct (without the use of the Kramers-Kronig relations) measuring the dielectric response (dynamic conductivity and permittivity) spectra of dielectrics, conductors, and superconductors in the terahertz frequency range (0.03-1.5 THz) are described. The methods are realised by using BWO (backward-wave oscillator) spectrometers developed at the A.M. Prokhorov General Physics Institute, RAS. Dielectric measurements can be performed at temperatures from 2 to 1000 K in magnetic fields up to 8 T. The dielectric response spectra are investigated for a number of materials with properties determined by electron correlation effects: superconductors, one-dimensional conductors, heavy fermion systems, spin-ladder cuprates, and spin glasses.

Original languageEnglish
Pages (from-to)916-923
Number of pages8
JournalQuantum Electronics
Issue number10
Publication statusPublished - Oct 2007
Externally publishedYes


  • Electron correlations
  • Low temperatures
  • Terahertz spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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