Multiprobe quantum spin Hall bars
Citation:
Narayan, A, Sanvito, S, Multiprobe quantum spin Hall bars, European Physical Journal B, 87, 2, 2014, 43-Download Item:
1311.7330v2.pdf (Accepted for publication (author's copy) - Peer Reviewed) 138.1Kb
Abstract:
We analyze electron transport in multiprobe quantum spin Hall (QSH) bars using the B¨uttiker
formalism and draw parallels with their quantum Hall (QH) counterparts. We find that in a QSH
bar the measured resistance changes upon introducing side voltage probes, in contrast to the QH
case. We also study four- and six-terminal geometries and derive the expressions for the resistances.
For these our analysis is generalized from the single-channel to the multi-channel case and to the
inclusion of backscattering originating from a constriction placed within the bar.
Sponsor
Grant Number
Irish Research Council for Science and Engineering Technology (IRCSET)
Author's Homepage:
http://people.tcd.ie/sanvitosDescription:
PUBLISHED
Author: SANVITO, STEFANO
Type of material:
Journal ArticleCollections:
Series/Report no:
European Physical Journal B87
2
Availability:
Full text availableKeywords:
PhysicsDOI:
http://dx.doi.org/10.1140/epjb/e2014-50042-4Licences: