Electron Magnetic Resonance

Electron magnetic resonance (EMR) includes electron spin resonance (ESR) and cyclotron resonance (CR) and can be performed in pulsed magnetic fields using a transmission-type tunable-frequency spectrometer operated in two frequency ranges: Range A: ~100 - 600 GHz (VDIs and Gunn-diodes), range B: 1.2 - 9 THz (free electron laser). The spectrometer is equipped with Ca:Ge and n-InSb bolometers. EMR experiments are best suited for magnet types A or B (needs a 24 mm bore). The lowest temperature available for EMR experiments is 1.5 K (range A) and ~ 5 K (range B). The maximum sample size is ~ 3 mm outer diameter (see Ref. [1] for further information).

To perform experiments you are required to submit a proposal for magnet time http://www.emfl.eu/user.html. For EMR experiments in range B you are required to submit in addition another proposal requesting FEL beamtime http://www.hzdr.de/db/Cms?pNid=1732.

ESR spectra of the quasi-1D chain material Cu-PM with alternating DM interaction taken in magnetic fields up to 64 T (T = 1.9 K; Ref. [2]).

Frequency-field diagram of the quasi-1D chain material Cu-PM taken in magnetic fields up to 64 T (open symbols; Ref. [2]).

[1] S.A.  Zvyagin et al., Rev. Sci. Instr. 80, 073102 (2009)

[2] S.A.  Zvyagin et al., Phys. Rev. B 83, 060409(R) (2011)