Abstract:We investigate the optical conductivity of Sr1−xCaxRuO3 across the ferromagnetic to paramagnetic transition that occurs at x = 0.8. The thin films were grown by metalorganic aerosol deposition with 0 ≤ x ≤ 1 onto NdGaO3 substrates. We performed THz frequency domain spectroscopy in a frequency range from 3 cm −1 to 40 cm −1 (100 GHz to 1.4 THz) and at temperatures ranging from 5 K to 300 K, measuring transmittivity and phase shift through the films. From this we obtained real and imaginary parts of the optical … Show more
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