Anomalous conductance quantization in the inter-band gap of a one-dimensional channel
dc.contributor.author | Green, Frederick | |
dc.contributor.author | Das, Mukunda P | |
dc.date.accessioned | 2020-06-15T01:26:48Z | |
dc.date.issued | 2018 | |
dc.date.updated | 2019-12-22T07:32:00Z | |
dc.description.abstract | We report on a singular departure from the canonical step sequence of quantized conductance in a ballistic, quasi-one-dimensional metallic channel. Ideally in such a structure each sub-band population contributes its conductance quantum independently of the rest. In a picture based exclusively on coherent single-carrier transmission, unitary back-scattering may lower a conductance step below ideal but it is not possible for it to enhance it beyond the ideal conductance quantum. Precisely such an anomalous and robust voltage-dependent enhancement has already been observed over the whole density range between sub-band thresholds (de Picciotto R et al 2004 Phys. Rev. Lett. 92 036805, de Picciotto R et al 2008 J. Phys.: Condens. Matter 20 164204), a phenomenon left unexplained till now. We show theoretically that the anomalous enhancement of the ideal conductance is the hallmark of carrier transitions coupling the discrete sub-bands. | |
dc.format.mimetype | application/pdf | en_AU |
dc.identifier.issn | 0953-8984 | en_AU |
dc.identifier.uri | http://hdl.handle.net/1885/205041 | |
dc.language.iso | en_AU | en_AU |
dc.publisher | Institute of Physics Publishing | en_AU |
dc.rights | © 2018 IOP Publishing Ltd | en_AU |
dc.source | Journal of Physics: Condensed Matter | en_AU |
dc.title | Anomalous conductance quantization in the inter-band gap of a one-dimensional channel | en_AU |
dc.type | Journal article | en_AU |
local.bibliographicCitation.issue | 38 | en_AU |
local.bibliographicCitation.lastpage | 7 | en_AU |
local.bibliographicCitation.startpage | 1 | en_AU |
local.contributor.affiliation | Green, Frederick, University of New South Wales | en_AU |
local.contributor.affiliation | Das, Mukunda P, College of Science, ANU | en_AU |
local.contributor.authoremail | u8708721@anu.edu.au | en_AU |
local.contributor.authoruid | Das, Mukunda P, u8708721 | en_AU |
local.description.embargo | 2037-12-31 | |
local.description.notes | Imported from ARIES | |
local.identifier.absfor | 020404 - Electronic and Magnetic Properties of Condensed Matter; Superconductivity | en_AU |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | en_AU |
local.identifier.ariespublication | u4485658xPUB132 | en_AU |
local.identifier.citationvolume | 30 | en_AU |
local.identifier.doi | 10.1088/1361-648X/aadafd | en_AU |
local.identifier.scopusID | 2-s2.0-85053380347 | |
local.identifier.uidSubmittedBy | u4485658 | en_AU |
local.publisher.url | http://www.iop.org/ | en_AU |
local.type.status | Published Version | en_AU |
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