eprintid: 1537574
rev_number: 25
eprint_status: archive
userid: 608
dir: disk0/01/53/75/74
datestamp: 2017-01-27 11:20:08
lastmod: 2021-09-19 23:59:48
status_changed: 2017-01-27 11:20:08
type: article
metadata_visibility: show
creators_name: Yan, C
creators_name: Pepper, M
creators_name: Kumar, S
creators_name: See, P
creators_name: Farrer, I
creators_name: Ritchie, D
creators_name: Griffiths, J
creators_name: Jones, G
title: Fano resonance in a cavity-reflector hybrid system
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
divisions: C06
note: Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License (http://creativecommons.org/licenses/by/3.0/). Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
abstract: We present the results of transport measurements in a hybrid system consisting of an arch-shaped quantum point contact (QPC) and a reflector; together, they form an electronic cavity in between them. On tuning the arch-QPC and the reflector, an asymmetric resonance peak in resistance is observed at the one-dimension to two-dimension transition. Moreover, a dip in resistance near the pinch-off of the QPC is found to be strongly dependent on the reflector voltage. These two structures fit very well with the Fano line shape. The Fano resonance was found to get weakened on applying a transverse magnetic field, and smeared out at 100 mT. In addition, the Fano-like shape exhibited a strong temperature dependence and gradually smeared out when the temperature was increased from 1.5 to 20 K. The results might be useful in realizing devices for quantum information processing.
date: 2017-01-15
date_type: published
official_url: http://dx.doi.org/10.1103/PhysRevB.95.041407
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
article_type: rapid_communication
verified: verified_manual
elements_id: 1204321
doi: 10.1103/PhysRevB.95.041407
lyricists_name: Kumar, Sanjeev
lyricists_name: Pepper, Michael
lyricists_name: Yan, Chengyu
lyricists_id: SKUMA71
lyricists_id: MPEPP38
lyricists_id: YANXX07
actors_name: Yan, Chengyu
actors_id: YANXX07
actors_role: owner
full_text_status: public
publication: Physical Review B
volume: 95
number: 4
article_number: 041407(R)
issn: 0163-1829
citation:        Yan, C;    Pepper, M;    Kumar, S;    See, P;    Farrer, I;    Ritchie, D;    Griffiths, J;           Yan, C;  Pepper, M;  Kumar, S;  See, P;  Farrer, I;  Ritchie, D;  Griffiths, J;  Jones, G;   - view fewer <#>    (2017)    Fano resonance in a cavity-reflector hybrid system.           [Rapid communication].        Physical Review B , 95  (4)    , Article 041407(R).  10.1103/PhysRevB.95.041407 <https://doi.org/10.1103/PhysRevB.95.041407>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1537574/1/PhysRevB.95.041407.pdf