[21p-131-1~6] 10.4 Semiconductor spintronics, superconductor, multiferroics

▲ [21p-131-6] Spin-orbit interaction of photo-injected long-lived carriers in undoped GaAs quantum wells

〇Haruki Sanada¹, Alexander Stramma¹, Yoji Kunihashi¹, Yusuke Tanaka¹, Hideki Gotoh¹, Koji Onomitsu¹, Makoto Kohda², Junsaku Nitta², Tetsuomi Sogawa¹ (1.NTT-BRL, 2.Tohoku Univ.)

Keywords:spin-orbit interaction

We carried out time and spatially resolved Kerr rotation measurements to analyze the spin-orbit interaction of carriers with a long spin lifetime observed in undoped GaAs quantum wells. The results revealed that the symmetry of the spin-orbit effective magnetic fields agrees with that of the Dresselhaus SOI of the conduction band electrons.