2018/06/19 by Tianzhen Zhang, Sergio Vlaic, Stéphane Pons +13 · 10 citations
Physics and Astronomy · #Atomic physics #Condensed matter physics #Coulomb blockade #Electron #Electronic structure #Materials science #Nanocrystal #Nanotechnology #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum tunnelling #Surface and Thin Film Phenomena #Theoretical and Computational Physics #Wave function #cond-mat.mes-hall #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.97.214514
published in Physical review. B./Physical review. B 97(21) (American Physical Society) · Main 12 pages, Supp: 6 pages
openalex publication_date 2018/06/19 · arxiv created 2018/10/21 · arxiv updated 2018/10/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this article, the authors show that the two-dimensional electron gas at the surface of InAs provides a remarkable substrate for the growth of Pb nanocrystals. This is used to study the quantum confinement effects in such nanocrystals - since the Fermi wavelength of the two-dimensional electron gas is larger than the lateral size of the nanocrystal, the quantum constriction of the wavefunction at the interface leads to a weak coupling between the nanocrystal and the substrate and so preserves the quantum confinement effects within the nanocrystal. The researchers are able to observe the superconducting parity effect and the mapping of electronic wave functions via scanning tunneling spectroscopy.