Forskning ved Københavns Universitet - Københavns Universitet

Forside

Charging effects in tunnel junctions: A four level study

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Charging effects in small tunnel junctions are studied via a transformation which, following Wilson, allows us to treat the hybridization between the two sides and the charging energy exactly. The two conduction bands are transformed to the so-called "hopping" Hamiltonian. The transformation makes the model suitable for a full renormalization group calculation. Here we study a simplified version of this Hamiltonian. We keep only the first term that hybridize directly the two bands and which involves the charging energy and the junction coupling strength. The resulting four level system is solved exactly and the eigenvalues, the meansquare charge difference, and the charge transfer fluctuations are calculated.

OriginalsprogEngelsk
TidsskriftSolid State Communications
Vol/bind77
Udgave nummer12
Sider (fra-til)917-921
Antal sider5
ISSN0038-1098
DOI
StatusUdgivet - 1 jan. 1991

ID: 199596486