2017/07/11 by Keiji Ono, G. Giavaras, Tetsufumi Tanamoto +3 · 1 citation
Physics and Astronomy · #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.119.156802
published as Phys. Rev. Lett. 119, 156802 (2017) · 5 pages and 3 figures for the main text, 6 pages and 5 figures for the appendices
arxiv created 2017/07/11 · arxiv updated 2017/10/18
We study hole spin resonance in a p-channel silicon metal-oxide-semiconductor field-effect transistor. In the sub-threshold region, the measured source-drain current reveals a double dot in the channel. The observed spin resonance spectra agree with a model of strongly coupled two-spin states in the presence of a spin-orbit-induced anti-crossing. Detailed spectroscopy at the anti-crossing shows a suppressed spin resonance signal due to spin-orbit-induced quantum state mixing. This suppression is also observed for multi-photon spin resonances. Our experimental observations agree with theoretical calculations.