Shell Filling and Spin Effects in a Few Electron Quantum Dot | Zendy

Seigo Tarucha | Zendy; D. G. Austing | Zendy; Takashi Honda | Zendy; R. J. van der Hage | Zendy; Leo P. Kouwenhoven | Zendy

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Shell Filling and Spin Effects in a Few Electron Quantum Dot

Author(s) -

Seigo Tarucha,

D. G. Austing,

Takashi Honda,

R. J. van der Hage,

Leo P. Kouwenhoven

Publication year - 1996

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.77.3613

Subject(s) - physics , electron , quantum dot , condensed matter physics , spins , magnetic field , degenerate energy levels , spin (aerodynamics) , coulomb , pairing , quantum mechanics , superconductivity , thermodynamics

We study atomiclike properties of artificial atoms by measuring Coulomb oscillations in vertical quantum dots containing a tunable number of electrons starting from zero. At zero magnetic field the energy needed to add electrons to a dot reveals a shell structure for a two-dimensional harmonic potential. As a function of magnetic field the current peaks shift in pairs, due to the filling of electrons into spin-degenerate single-particle states. When the magnetic field is sufficiently small, however, the pairing is modified, as predicted by Hund’s rule, to favor the filling of parallel spins. [S00319007(96)01418-4]

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