Terahertz-range free-electron laser electron spin resonance spectroscopy: techniques and applications in high magnetic fields.
The successful use of picosecond-pulse free-electron-laser (FEL) radiation for the continuous-wave terahertz-range electron spin resonance (ESR) spectroscopy has been demonstrated. The combination of two linac-based FELs (covering the wavelength range of 4-250 microm) with pulsed magnetic fields up to 70 T allows for multifrequency ESR spectroscopy in a frequency range of 1.2-75 THz with a spectral resolution better than 1%. The performance of the spectrometer is illustrated with ESR spectra obtained in the 2,2-diphenyl-1-picrylhydrazyl and the low-dimensional organic material (C6H9N2)CuCl3.
Zvyagin
S A
SA
Dresden High Magnetic Field Laboratory (HLD), Forschungszentrum Dresden-Rossendorf (FZD), 01314 Dresden, Germany. s.zvyagin@fzd.de
Ozerov
M
M
Cizmár
E
E
Kamenskyi
D
D
Zherlitsyn
S
S
Herrmannsdörfer
T
T
Wosnitza
J
J
Wünsch
R
R
Seidel
W
W