Observation of magnetic resonance in Pr2CuO4 and Nd2CuO4
Eremenko V. V. , Zvyagin S. A. , Pishko V. V. , Tsapenko V. V. , Barilo S. N., Zhigunov D. I.
Absorption lines which are intense and broad (ΔΗ~0.5 Τ) have been observed in the wavelength region 5-1.5 mm in tetragonal Pr2Cu04 and Nd2Cu04 single crystals at 2-10 К in a magnetic field directed along the tetragonal axis. These lines appear to be associated with resonance excitations of copper ions, whose state is strongly affected by the rare-earth ions.