Direct observation of the discrete energy spectrum of two lanthanide-based single-chain magnets by far-infrared spectroscopy

作者：Haas Sabrina^*; Heintze Eric; Zapf Sina; Gorshunov Boris; Dressel Martin; Bogani Lapo

来源：Physical Review B, 2014, 89(17): 174409.

DOI：10.1103/PhysRevB.89.174409

The far-infrared optical transmission has been studied for two lanthanide-based single-chain magnets DyPhOPh and TbPhOPh in the frequency range between 3 and 80 cm(-1). The spectra were acquired at temperatures between 2 and 80 K and magnetic fields up to 6 T. Based on their magnetic field dependence in DyPhOPh two of the observed absorption lines are identified as transitions inside the crystal field split Dy3+ ground multiplet H-6(15/2), coupled to the neighboring spins. In TbPhOPh one transition was observed inside the crystal-field-split Tb3+ ground multiplet F-7(6). The results allow a spectroscopic investigation of the role of single-ion anisotropy and exchange in Glauber dynamics.

• 出版日期2014-5-7