B. P. Gorshunov, A. A. Volkov, A. S. Prokhorov, I. E. Spektor, J. Akimitsu, M. Dressel, G. Nieuwenhuys, S. Tomić, Sh.-i. Uchida, “Terahertz BWO spectroscopy of conductors and superconductors”, Kvantovaya Elektronika, 2007, Volume 37, Number 10,Pages <nobr>916

This article is cited in 13 papers

Special issue devoted to the 25 anniversary of the A.M. Prokhorov General Physics Institute

Terahertz BWO spectroscopy of conductors and superconductors

B. P. Gorshunov^a, A. A. Volkov^a, A. S. Prokhorov^a, I. E. Spektor^a, J. Akimitsu^b, M. Dressel^c, G. Nieuwenhuys^d, S. Tomić^e, Sh.-i. Uchida^f

^a Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b Department of Physics, Aoyama-Gakun University, Japan
^c Physikalisches Institut, Universität Stuttgart, Germany
^d Kamerlingh Onnes Laboratory, Leiden University, The Netherlands
^e Institut za Fiziku, Croatia
^f Department of Physics, University of Tokyo, Japan

Abstract: 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.

PACS: 07.57.Hm, 07.57.Pt, 07.57.Ty, 74.25.-q

Received: 02.05.2007