The Library
Fractional quantum Hall states in a Ge quantum well
Tools
Tools
Tools
Mironov, O. A., D’Ambrumenil, Nicholas, Dobbie, A. (Andrew), Leadley, D. R. (David R.), Suslov, A. V. and Green, E. (2016) Fractional quantum Hall states in a Ge quantum well. Physical Review Letters, 116 (17). 176802. doi:10.1103/PhysRevLett.116.176802 ISSN 0031-9007.
|
PDF
WRAP_9573062-px-280217-1512.06985v2.pdf - Accepted Version - Requires a PDF viewer. Download (2103Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevLett.116.176802
Abstract
Measurements of the Hall and dissipative conductivity of a strained Ge quantum well on a SiGe/(001)Si substrate in the quantum Hall regime are reported. We analyse the results in terms of thermally activated quantum tunneling of carriers from one internal edge state to another across saddle points in the long range impurity potential. This shows that the gaps for different filling fractions closely follow the dependence predicted by theory. We also find that the estimates of the separation of the edge states at the saddle are in line with the expectations of an electrostatic model in the lowest spin-polarised Landau level (LL), but not in the spin-reversed LL where the density of quasiparticle states is not high enough to accommodate the carriers required.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Quantum Hall effect , Quantum wells, Landau levels | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 27 April 2016 | ||||
| Dates: |
|
||||
| Volume: | 116 | ||||
| Number: | 17 | ||||
| Article Number: | 176802 | ||||
| DOI: | 10.1103/PhysRevLett.116.176802 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Date of first compliant deposit: | 1 March 2017 | ||||
| Date of first compliant Open Access: | 1 March 2017 | ||||
| Funder: | Engineering and Physical Sciences Research Council (EPSRC), National Science Foundation (U.S.) (NSF), Národný štipendijný program slovenských republiky [National Scholarship Programme of the Slovak Republic] | ||||
| Grant number: | EP/J001074, EP/F031408/1 (EPSRC), Cooperative Agreement No. DMR-1157490 (NFS) |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
