Crynodeb
By creating a sharp and dense dopant profile of phosphorus atoms buried within a silicon host, a two-dimensional electron gas is formed within the dopant region. Quantum confinement effects induced by reducing the thickness of the dopant layer, from 4.0nm to the single-layer limit, are explored using angle-resolved photoemission spectroscopy. The location of theoretically predicted, but experimentally hitherto unobserved, quantum well states known as the Δ manifold is revealed. Moreover, the number of carriers hosted within the Δ manifold is shown to be strongly affected by the confinement potential, opening the possibility to select carrier characteristics by tuning the dopant-layer thickness.
Iaith wreiddiol | Saesneg |
---|---|
Rhif yr erthygl | 121402 |
Cyfnodolyn | Physical Review B |
Cyfrol | 101 |
Rhif cyhoeddi | 12 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 15 Maw 2020 |