[12p-M101-1~14] 10.4 Semiconductor spintronics, superconductor, multiferroics

▲ [12p-M101-1] [Young Scientist Presentation Award Speech] Optically induced spin transport in semi-metal heterostructures

〇Hana Hirose¹, Naoto Ito¹, Masashi Kawaguchi¹, Masamitsu Hayashi^1,2 (1.The Univ. of Tokyo, 2.National Inst. for Materials Science)

Keywords:circular photogalvanic effect, spin transport

Anisotropic photocurrents appear under illumination of circularly polarized light due to spin-momentum locked bands. This effect is known as the circular photogalvanic effect (CPGE). We have studied the CPGE in (semi)metallic heterostructures and revealed the presence of spin-momentum locked bands of Rashba type at interfaces. The photocurrents induced by circularly polarized light under front and back illumination are studied to reveal contributions from the bulk and interface(s).