期刊
PHYSICAL REVIEW LETTERS
卷 128, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.146802
关键词
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资金
- Army Research Office (ARO) [W911NF-17-1-0274]
- Vannevar Bush Faculty Fellowship program under ONR [N00014-15-1-0029]
- NSF through the UWMadison MRSEC [DMR-1720415]
- NSF MRI program [DMR-1625348]
In this study, measurements and calculations of the energies of "valley-orbit" states in silicon quantum dots were conducted to understand the interplay between interface roughness, orbital confinement, and electron interactions. The results provide insights into the physical contributions and offer a new approach to probe the quantum well interface.
The energies of valley-orbit states in silicon quantum dots are determined by an as yet poorly understood interplay between interface roughness, orbital confinement, and electron interactions. Here, we report measurements of one- and two-electron valley-orbit state energies as the dot potential is modified by changing gate voltages, and we calculate these same energies using full configuration interaction calculations. The results enable an understanding of the interplay between the physical contributions and enable a new probe of the quantum well interface.
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