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Formation of Co nanoclusters in epitaxial Ti_{0.96} Co_{0.04} O_2 thin films and their ferromagnetism
D. H. Kim, J. S. Yang, K. W. Lee +8
Anatase Ti0.96Co0.04O2 films were grown epitaxially on SrTiO3 (001) substrates by using plused laser deposition with in-situ reflection high-energy electron diffraction. The oxygen…
Systematic trends in the electronic structure parameters of 4d transition metal oxides SrMO_{3} (M = Zr, Mo, Ru, and Rh)
Y. S. Lee, J. S. Lee, T. W. Noh +4
We investigated the electronic structures of the perovskite-type 4 transition metal oxides SrO ( = Zr, Mo, Ru, and Rh) using their optical conductivity spectra .…
Temperature-dependent Raman spectroscopy in BaRuO systems
Y. S. Lee, T. W. Noh, J. H. Park +7
We investigated the temperature-dependence of the Raman spectra of a nine-layer BaRuO single crystal and a four-layer BaRuO epitaxial film, which show pseudogap formations…
Non-Fermi liquid behavior and scaling of low frequency suppression in optical conductivity spectra of CaRuO
Y. S. Lee, Jaejun Yu, J. S. Lee +4
Optical conductivity spectra of paramagnetic CaRuO are investigated at various temperatures. At T=10 K, it shows a non-Fermi liquid behavior of $σ_1(ω)\sim 1/ω^{\frac…
Complicated nature of the gap in MgB2: magnetic field-dependent optical studies
H. J. Lee, J. H. Jung, K. W. Kim +7
We investigated the magnetic field (H)-dependent optical conductivity spectra of MgB2 thin film in the far-infrared region. The H-dependences can be explained by the increase of no…
Charge Ordering Fluctuation and Optical Pseudogap in LaCaMnO
K. H. Kim, S. Lee, T. W. Noh +1
Optical spectroscopy was used to investigate the optical gap (2) due to charge ordering (CO) and related pseudogap developments with x and temperature (T) in LaCaM…