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This is a Quantitative Study study.

October 16, 2025Open Access

Hole Spin in Direct Bandgap Germanium-Tin Quantum Dot

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The study reveals the potential for germanium-tin quantum dots to enhance light interactions and spin qubit efficiency.
Results indicate that 4.5 at.% of tin is required for every 1% increase in compressive strain to maintain the direct bandgap.
Research includes a theoretical framework for evaluating dipole moments and relaxation rates in electric dipole spin resonance devices.
Analysis finds that while compressive strain aids hole confinement, it adversely impacts the Rashba coupling.

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This research explores hole spin quantum dots in germanium-tin, indicating advantages in bandgap directness and light interaction.

Rotaru et al. (2025) studied this question.

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