Phase behavior of coherent tunneling through a quantum dot: A consideration of the off-diagonal elastic coupling

Q. Sun and T. Lin

The European Physical Journal B: Condensed Matter and Complex Systems, 1998, vol. 5, issue 4, 913-917

Abstract: The electron transmission amplitude through a quantum dot is studied by considering all elastic coupling elements, not only the diagonal elements Γ jj , but also the off-diagonal elements Γ ij .The Breit-Winger formula is extended to multiple states under the above consideration. The phase of the transmission amplitude exhibits a gradual increase by π along a resonance peak and an abrupt phase drop by π near the center between two consecutive resonance peaks which can be explained completely in a single-electron picture. When the temperature Τ=0 the phase drop is absolutely abrupt; when Τ≠0 the phase drop is on a energy scale much smaller than both Γ ij and k B Τ. In addition, at the phase-drop-point, some interesting manifestations are predicted. Copyright EDP Sciences, Springer-Verlag 1998

Date: 1998
References: Add references at CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1007/s100510050517 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:5:y:1998:i:4:p:913-917:10.1007/s100510050517

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1007/s100510050517

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().