THz-range free-electron laser ESR spectroscopy: techniques and applications in high magnetic fields

Abstract

The successful use of picosecond-pulse free-electron-laser (FEL) radiation for the continuous-wave THz-range electron spin resonance (ESR) spectroscopy has been demonstrated. The combination of two linac-based FELs (covering the wavelength range of 4 - 250 $\mu$m) with pulsed magnetic fields up to 70 T allows for multi-frequency 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 (DPPH) and the low-dimensional organic material (C${}_6$H${}_9$N${}_2$)CuCl${}_3$.

9 pages, 9 figures. Rev. Sci. Instrum., accepted

References in corpus (3)

• Magnetic Excitations in the Spin-1 Anisotropic Heisenberg Antiferromagnetic Chain System NiCl${}_2$-4SC(NH${}_2$)${}_2$
• Tuning the magnetic ground state of a novel tetranuclear Nickel(II) molecular complex by high magnetic fields
• Electron Spin Resonance in sine-Gordon spin chains in the perturbative spinon regime

Cited by in corpus (8)

• Direct determination of exchange parameters in Cs2CuBr4 and Cs2CuCl4: high-field ESR studies
• Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
• Infrared and Terahertz Spectroscopy of Strongly Correlated Electron Systems under Extreme Conditions
• General Magnetic Transition Dipole Moments for Electron Paramagnetic Resonance
• Field-Induced Gap in a Quantum Spin-1/2 Chain in a Strong Magnetic Field
• THz Field Control of In-Plane Orbital Order in La0.5Sr1.5MnO4
• ESR modes in a Strong-Leg Ladder in the Tomonaga-Luttinger Liquid Phase
• Experimental observation of repulsively bound magnons