The 70th JSAP Spring Meeting 2023

Presentation information

Oral presentation

10 Spintronics and Magnetics » 10.2 Fundamental and exploratory device technologies for spin

[18a-D704-1~11] 10.2 Fundamental and exploratory device technologies for spin

Sat. Mar 18, 2023 9:00 AM - 12:00 PM D704 (Building No. 11)

Minori Goto(Osaka Univ.), Shinji Isogami(NIMS)

10:00 AM - 10:15 AM

[18a-D704-5] Modulation of Circular Photogalvanic Effect in Conducting SrTiO3 by Ionic Gating

Mahiro Yamamoto1, Taiki Nishijima1,2, Ryo Ohshima1,2, Yuichiro Ando1,2, Masashi Shiraishi1,2 (1.Kyoto Univ., 2.CSRN, Kyoto Univ.)

Keywords:SrTiO3, Circular Photogalvanic Effect, Spin Detection

SrTiO3 (STO) exhibits a variety of interesting physical properties such as superconductivity, ferroelectricity, and semiconductor by impurity doping. It is also known that etching of the surface with argon ions creates oxygen vacancies in the lattice, which leads to a metallic state on the surface. This metallic surface was reported to have Rashba-type spin splitting. In this study, we observed the Rashba-type spin-orbit interaction in conducting STO using Circular Photogalvanic Effect (CPGE), and observed the modulation of the CPGE by applying gate voltage using Ionic Iiquid films.