[Tu-P1-E] Terahertz spectroscopy and control of novel material systems

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[Tu-P1-E-05] Initial Phase of THz Bloch Oscillations in a GaAs-Based Superlattice Changing with Interminiband Coupling Strength

〇Takeya Unuma¹, Kosuke Ueda¹, Keita Okada¹, Nobuko Hino¹, Naomi Nagai², Kazuhiko Hirakawa² (1. Nagaoka Univ. of Tech. (Japan), 2. The Univ. of Tokyo (Japan))

Designing a GaAs-based superlattice for systematic control of interminiband coupling under bias electric fields, we demonstrate that the initial phase of THz Bloch oscillations changes continuously over a range of π/2 due to electron delocalization with the interminiband coupling strength.