[9p-N206-1~15] 6.3 Oxide electronics

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)

[9p-N206-2] Observation of Metal-Insulator Transition for λ-phase Ti₃O₅ Films using Hard X-ray Photoemission Spectroscopy

〇Kouhei Yoshimatsu¹, Akira Yasui² (1.Inst. Sci. Tokyo, 2.JASRI)

Keywords:

Metal-insulator transition,Titanium oxides,Hard x-ray photoemission spectroscopy

We conducted hard X-ray photoelectron spectroscopy measurements to investigate the metal-insulator transition (MIT) observed in λ-phase Ti3O5 thin films. Valence-band spectra were recorded in the temperature range from 200 K to 400 K, which covered the transition temperature of 350 K. A clear change in density of states near the Fermi level was observed across the MIT owing to the spectral weight transfer of Ti 3d states.