Optical absorption in highly-strained Ge/SiGe quantum wells: the role of Γ-to-Δ scattering

L. Lever, Z. Ikonić, A. Valavanis +7

We report the observation of the quantum-confined Stark effect in Ge/SiGe multiple quantum well heterostructures grown on Si(0.22)Ge(0.78) virtual substrates. The large compressive…