Investigation of the coupling asymmetries at double-slit interference experiments
Küçük Resim Yok
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Iop Publishing Ltd
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Double-slit experiments inferring the phase and the amplitude of the transmission coefficient performed at quantum dots (QDs), in the Coulomb blockade regime, present anomalies at the phase changes depending on the number of electrons confined. This phase change cannot be explained if one neglects the electron-electron interactions. Here, we present our numerical results, which simulate the real sample geometry by solving the Poisson equation in 3D. The screened potential profile is used to obtain energy eigenstates and eigenvalues of the QD. We find that, certain energy levels are coupled to the leads stronger compared to others. Our results give strong support to the phenomenological models in the literature describing the charging of a QD and the abrupt phase changes.
Açıklama
Conference on Aharonov-Bohm Effect and Berry Phase 50/25 Anniversary -- DEC 14-15, 2009 -- Bristol Univ, Bristol, ENGLAND
Anahtar Kelimeler
Quantum-Dot, Phase, Transmission, Coherence
Kaynak
Journal Of Physics A-Mathematical And Theoretical
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
43
Sayı
35
